2 Corinthians 11:20 (linked here in its context
https://biblehub.com/bsb/2_corinthians/11.htm) is a great verse for anyone thinking it is better to “turn the other cheek” to an abusive church leader. It simply isn’t! Turn away! Don’t put up with it.
The apostle Paul is this verse is shaming the Corinthians regarding “many who boast in their flesh” saying “you gladly tolerate fools, since you are so wise. In fact, you even put up with anyone who enslaves you or exploits you or takes advantage of you or exalts himself or strikes you in the face.” And he compares himself and his coworkers who are meek and gentle among them as setting the right example from chapters 11-14 in a long discourse.