To try to restrain yourself when another is abusive to you :) but please remember that Revenge belongs to Jehovah :) He will repay for peoples evil deeds :)
That is why the apostle Paul counseled us: “Do not avenge yourselves, beloved, but yield place to the wrath; for it is written: ‘Vengeance is mine; I will repay, says Jehovah.’” ( Romans 12:19) Indeed, the Bible speaks of a day of vengeance on the part of the Creator.