Lepanto, where Mr. Muslim’s fleet met Mr. Cannon.
“The Gates Of Vienna”, a defeat which left a festering sore that led to the selection of teh same day for the Twin Towers attack.
“Entebbe” is another example.
I hope my tag line summarized the issue and the solution.
But in all of those cases the Moslems did not lose due to their infighting, but rather because their opponents were smarter. The Moslems did not fritter away any advantage in any of those situations