There's no "macro rotation" for a Ret that I know of, it's all situational and depends on what the other player uses. Using Wings in PvP in first seconds is in a lot of fights most likely a lose. Be it duel, bg or ESPECIALLY ARENAS.
In arena if you do that you'll most likely just die in few seconds, because everyone with a brain will focus a paladin that wing'ed in first second.
And the situational stuff is depending on the enemy class. Mainly I either start with Judgement (of Justice for most classes) and continue with DS/CS or CS -> Judgement. Exorcism I am using rarely in duels, I prefer using AoW procs on instant FoL.