other cheek but it doesn't seem unreasonable that at some point continually turning the other cheek could become abusive. There's people that will take advantage of turning the other cheek if you continually let them.
Holmoe's response to the Duke VB was IMO indicative of this. Duke VB player said BYU fans were being racist with absolutely no shred of evidence and Holmoe pretty much self flagellates as well as castigated a large group of fans with no evidence.