/castsequence crusader strike, consecrate, judgement


as for the mage, you'll have to do it manually. so alt+tab to control mage.


or to make it quicker. i'd just make my mage /follow after the first judgement and spam arcane explosion.
so leave mage in a spot. run around and gather mobs. run close to mage and spam above macro. /follow on mage and let them have it with arcane explosion.