Before I had my Prot Pally, I had pretty good success with a Disc Priest. Just make sure you don't over pull. Holy Nova starts to lose damage per mob (as do many AoE spells) when you get too many mobs. You just have to play around with it. Damage reflecting power word shield = win.

The nice thing about Pally consecration is that it isn't limited by it's damage getting reduced when you pull a certain number of mobs!