Judge me, O God, and plead my cause against an ungodly nation: O deliver me from the deceitful and unjust man.
Judge me - vindicate me.
Plead my cause against an ungodly nation. The Hebrew often means 'a nation not loving' or 'merciful' х lo'
(H3808) chaaciyd (H2623)]; but in Psalms 4:3 it is rendered as the English version here.