Is there a prophecy about the victory of Islam?
Yes. The Holy Qur’an foretells the victory of Islam over all religions. But it has not yet been achieved, and one only comes closer to it when every believer does something for it himself.
In several places the Holy Qur’an promises that the religion which came with the Holy Prophet Muhammad (saw) will prevail over all religions. Hazrat Mirza Ghulam Ahmad (as), the Promised Messiah, also announced this victory.
But this promise has not yet been fulfilled. That should worry no one, but it should not make anyone complacent either. Whoever only preaches and then waits for the whole distance to be covered one fine morning is living in a dream. One comes closer to the goal only by setting out oneself.
What is meant is a victory of conviction, not of force. So the way there is for every believer to become a messenger of his faith himself, through his words and his example. If everyone does this, however distant the goal may seem, the promise will help him along.
There is something comforting in this. The success will be far greater than one’s own effort. God sets unseen forces to work in favour of those who strive, and He multiplies their work. But a start has to be made. Do your part and look to God for the rest.