I tank and heal, so this is what i do in experience:

Eye for an Eye just as tank starts running -> Sprint until holding spot -> Divine Seal -> Regen -> ( Medica 2 if there's a melee in party ) -> Cleric -> Swiftcast -> Holy -> Blizz 2 -> Holy -> Blizz 2 -> Holy -> Holy. In between Holy make sure you have a finger on Benediction if needed.

For Blizzard 2, I use it as a filler because it maximises the stun lock AND Bind can prevent a few attacks on tank if the tank keeps circling around the mobs. Most ppl don't realize Bind also prevents mobs from turning and usually right after the stun finishes, mobs will use their queued up auto-attacks. Using a Bind usually stops that, even if it gets removed right away.

For Medica II, I will only use it if there is a melee in the party or its those jumping goblins in Brayflox, since I'm lazy to switch stances for the 10s i'm doing the Holy spam.