...and look up King John and the Polish Knights at the gates of Vienna....it was a close call there.
I used a quote about that in Chapter one of my book - the very opening of it...
The Christian European West barely escaped destruction at the hands of the Moslems. At one point they were stopped near Tours and at another point, later on in time, outside the gates of Vienna. The Church throughout northern Africa was practically destroyed by Moslem power, and at the present hour, the Moslems are beginning to rise again.
Archbishop Fulton J. Sheen, Mary and the Moslems, Chapter 17 of The World’s First Love, 1953