Following are a number of back-translations as well as a sample translation for translators of Proverbs 20:22:

• Kupsabiny: “If a person does evil to you, do not revenge with evil,
  but commit it to God.” (Source: Kupsabiny Back Translation)
• Newari: “Do not say "I will do evil in return for evil."
  Put your trust in the Lord. Let him solve it.” (Source: Newari Back Translation)
• Hiligaynon: “[You (sing.)] do- not -revenge. You (sing.) just trust the LORD, and he will-help you (sing.).” (Source: Hiligaynon Back Translation)
• Kankanaey: “Do not curse one who does evil to you (sing.). Trust in God and he will save/rescue you (sing.).” (Source: Kankanaey Back Translation)
• English: “Do not say, ‘I will do evil to those who do evil to me;’
  wait for Yahweh to do something about it, and he will help you/do what is right.” (Source: Translation for Translators)