Appo Deepo Bhava or Atta dīpo bhava | Which is the correct wording?

I was looking for some good Buddha Quote and I find this very interesting. ' **Be light of yourself**. But I found two versions of this in google as 1. Appo Deepo Bhava 2. Atta dīpo bhava Which one is the correct wording? I would like to get the proper Pali wordings for the phrase " **Be light to yourself**". thank you