Following are a number of back-translations as well as a sample translation for translators of Isaiah 50:9:

• Kupsabiny: “It is God who helps me.
  And who then it is who says that I have done a mistake?
  All the people who accused me are lost/finished,
  they shall die/perish like a cloth that termites have eaten.” (Source: Kupsabiny Back Translation)
• Newari: “The LORD God helps me himself.
  Who is he who will say that I am a guilty one?
  All of them will become old and worn out like clothes.
  They will be eaten away by moths.” (Source: Newari Back Translation)
• Hiligaynon: “Listen! The Lord GOD is the one-who-helps me. Who can-say I have-sinned? They will-be like a cloth which becomes-rotten, which the insects will-eat-up-[only insects ‘ut-ut’/eat].” (Source: Hiligaynon Back Translation)
• English: “The Lord our God defends me in court,
  so no one will be able to condemn me/declare that I am guilty.
  All those who accuse me will disappear
  like old clothes that have been eaten by larvae of moths/cockroaches.” (Source: Translation for Translators)