FairPvP

This plugin enables PvP in WorldGuard PvP allowed regions, as well as in regions where a player is allowed to build (aka their claim). It also makes sure that PvP battles are always 1v1s, by preventing other players from damaging a player already locked in a duel.

Requires WorldGuard(and WorldEdit) to work.

Source Code: https://github.com/Kyu/FairPvp