Verses with the word appeal in the New Testament (2 verses):

Acts 25:11
For if I be an offender, or have committed any thing worthy of death, I refuse not to die: but if there be none of these things whereof these accuse me, no man may deliver me unto them. I appeal unto Caesar.

Acts 28:19
But when the Jews spake against it, I was constrained to appeal unto Caesar; not that I had ought to accuse my nation of.