Following are a number of back-translations as well as a sample translation for translators of Lamentations 3:64:

• Kupsabiny: “Oh God, pay these people back what they deserve
  according to what they have done!” (Source: Kupsabiny Back Translation)
• Newari: “O LORD, punish them according
  to the evil deeds they have done.” (Source: Newari Back Translation)
• Hiligaynon: “Punish them, LORD, according to what-is-fitting for what they did” (Source: Hiligaynon Back Translation)
• English: “Yahweh, cause them to suffer
  in return for their causing me to suffer!” (Source: Translation for Translators)