@gailcalled I think it’s the whole “martyrdom” model. Christian monastics took Jesus, who passively yielded to his aggressors like a “sacrificial lamb”, as their exemplar. There aren’t too many saints on the books who died fighting. It really fits in with the whole Christian expectation that they would be attacked by the secular forces, but that reliance on God, not personal strength, was the key (“not my will, but yours, be done”).
Buddhism values non-violence whenever possible, and sets the bar very high for permissible use of violence, but martyrdom is not held to be a ticket to salvation. And Buddhists have no God figure to whom they look for rescue.