Speak well of those who speak evil of you.
Pay good for evil.
Pray for those who cause you various offenses, wrongs, temptations, persecutions.
Whatever you do, on no account condemn anyone; do not even try to judge whether a person is good or bad, but keep your eyes on that one evil person for whom you must give an account before God, yourself.
St. Ignatius Brianchaninov