Following are a number of back-translations as well as a sample translation for translators of Isaiah 54:8:

• Kupsabiny: “I was very angry with you (plur.)
  just for a few days.
  I actually turned my back on you
  but I shall show mercy with a love that does not end.
  I am the God who saves you (plur.).” (Source: Kupsabiny Back Translation)
• Newari: “With anger only for a time
  I hid my face from you.
  [now] I will have mercy on you with my ever-existing faithful love,"
  The LORD God your redeemer has spoken like this.” (Source: Newari Back Translation)
• Hiligaynon: “Because of my great anger to you (sing.) I turned- my -back to you (sing.) in a short time, but because of my never ending love, I will-have-mercy on you (sing.). I, the LORD your (sing.) Savior, (am) the-(one) saying this.” (Source: Hiligaynon Back Translation)