Which sounds like VatII until one realizes that this same sainted pope called muslims a pagan race when calling a crusade in 1074. So which has more weight, diplomatic correspondence or:
Gregory, bishop, servant of the servants of God, to all who are willing to defend the Christian faith, greeting and apostolic benediction. We hereby inform you that the bearer of this letter, on his recent return from across the sea, came to Rome to visit us. He repeated what we had heard from many others, that a pagan race had overcome the Christians and with horrible cruelty had devastated everything almost to the walls of Constantinople, and were now governing the conquered lands with tyrannical violence, and that they had slain many thousands of Christians as if they were but sheep.
Interesting. So these two documents contradict one another (and Vatican II chose to use the former)? The first is a letter, but what is the second one? Legatus, could you provide links to these two documents?
The second is nothing less than a call for a Crusade by Pope St. Gregory VII. Check Fordham.edu for the complete text. The letter that Nostra Aetate builds the case for muslims worshiping God comes from here.