Here is what some of the most prominent Hindu gurus had to say on Abrahamic religions:
Swami Vivekananda
Swamiji said "people who deny the efficiency of any investigation into religion seem to me somewhat to be contradicting themselves. For instance the Christian claims that his religion is the only true one, because it was revealed to so and so. The Mohammedan makes the same claims for his religion; his is the only true one because it was revealed to so and so…
“The books fighting among themselves cannot be the judges. Decidedly then we have to admit that there is something higher than we have to admit that there is something more universal than these books, something higher that all the ethical codes that are in the world, something which can judge between the strength of inspirations of different nations. Whether we declare it boldly clearly or not - it is evident that here we appeal to reason.” (The Complete Work of Swami Vivekananda, Vol I 368-69).
How ‘enlightened’ was Mohammad?
Mohammed claimed that the Angel Gabriel came to him in a cave one day and took him on the heavenly horse, Harak and he visited the heavens. But with all that Mohammed spoke some wonderful truths. If you read the Koran, you find the most wonderful truths mixed with superstitions. How will you explain this? That man was inspired, no doubt, but that inspiration was as it were stumbled upon. He was not a trained Yogi, and did not know the reason of what he was doing. Think of the great evil that has been done through his fanaticism! Think of the millions massacred through his teachings, mothers bereft of their children, children made orphans whole countries destroyed, millions upon millions of people killed". (I. 184)
There is idol worship in Islam
Swamiji further said: "The Mohammedan who thinks that every ritual, every form, image or ceremony used by a non-Mohammedan is sinful does not think so when he comes to his own shrine, the Kaaba. Every religious Mohammedan whereever he prays, must imagine that he is standing before the Kaaba. When he makes a pilgrimage there, he must kiss the black stone in the wall of the shrine. All the kisses that have been imprinted on that stone, by millions and millions of pilgrims will stand up as witnesses for the benefit of the faithful on the last day of judgement. Then there is the well of Zam Zam. Mohammedans believe that whoever draws a little water out of that well will have sins pardoned, and he will, after the day of resurrection, have a fresh body, and live for ever (II:39). The Mohammedans use the graves of their sainst and martyres almost in the place of images (III:61).
Spread of Islam by Sword…
“The Mohammedan religion allows Mohammedans to kill all who are not of their religion. It is clearly stated in Koran, “Kill the infidels if they do not become Mohammedans”. They must be put to fire and sword. (II.335). Think of the little sects, born within a few hundred years out of fallible human brains, making this arrogant claim of knowledge of the whole of God’s infinite truth! Think of the arrogance of it! If it shows any- thing, it is this how vain human beings are. And it is no wonder that such claims have always failed, and , by the mercy of the Lord, are always destined to fail. In this line the Mohammedans were the best off; every step forward was made with the sword–the Koran in the one hand and the sward in the other: “Take the Koran, or you must die; there is no alternative!”. You know from history how phenomenal was their success; for six hundred years nothing could resist them, and then there came a time when they had to cry halt. So will it be with other religions if they follow the same methods.” (II:369-70)
Allah, the God of Islam
Swamiji said ‘universal brotherhood’ in Islam by saying: Mohammedans talk of universal brotherhood, but what comes out of that in reality? Why anybody who is not a Mohammedan will not be admitted into the brotherhood; he will more likely have his throat cut. (II:380)
More from Swamiji on this aspect: "Now, some Mohammedans are the crudest in this respect, and the most sectarian. Their watchword is “There is one God, and Mohammed is His Prophet”. Everything beyond that not only is bad, but must be destroyed forthwith; at a moment’s notice. every man or woman, who does not exactly believe in that, must be killed; everything that does not belong to this worship must be immediately broken; every book that teaches anything else must be burnt. From the Pacific to the Atlantic, for five hundred years, blood ran all over the world. That is Mohammedanism! Neverthe- less, among these Mohammedans, wherever there was a philosophic man, he was sure to protest against these cruelties. (IV:126)
Theocratic Islamic governments
Regarding the fact that in Muslim countries the non-Muslim religious communities had difficulty in performing their religious duties and the theocratic governments do not allow to build temples or churches, no wonder Swamiji said: "It is here that Indians build temples for Mohammedans and Christians. Nowhere else. If you go to other countries and ask Mohammedans or people of other religions to build a temple for you, see how they will help. They will instead try to break your temple and you too if they can (III:114).