I lost a religious victory to Emperor AI last week
I was Illians and didn't pay any attention to Religions and suddenly the game tells me that Luichurp has won a religious victory. He founded Order and spread it to all my cities as well as the cities of my Vassals. Aside from Order, there was only RoK on an island (founded by Bannor - how's that for a strange twist) inhabited by Bannor and Grigori, but Beeri brought Order to them as well.