spec i use for pvprot: http://www.wowhead.com/?talent#Lhdu0fZhoZiczrMfzidIdsGo
that gives your devastate a 9 rage cost which is where most of your damage will come from aside from shield slam and shockwaves.
you will want to pick up some pve dps gear and mix and match with pvp gear to give you a good resil amount (i run ~600 as prot) and armor pen/crit. 2pc t9 adds 6% more arp for free basically so try grabbing the shoulders and chest (or chest and helm if you need the hit from the helm) and use that as your base. pvp legs, gloves and helm (or shoulders instead of helm depending on your t9 pieces) should round out your main pieces for resil and crit. gem full strength, it converts to attack power for devastate and block value for shield slams. the rest of your gear should be about getting to a comfortable resilience level for you and 25% crit and 5% hit. pick up a slow one hander with nice dps stats like ap, crit, and armor pen since the higher weapon damage will boost devastate.