The general rotation (at least boxing) is:

Judgement of Choice.
Crusader Strike.
Divine Storm.
Consecrate.

You'll want to go different Blessings from your pallies to cover each.
I believe Might - Kings - Wisdom would be the priority order, assuming no Prot Pally for Sanctuary.
Kromtor had a post, on which talents to go with which blessings for maximum effect.

Righteousness or Vengeance/Corruption is best for single targets/Arena.
Use Command for Battlegrounds or AoE.

Have a hotkey to combine Divine Sacrifice with Divine Shield (I think), to redirect a large amount of party damage to your toon, but be immune to damage while this happens.
Keep Sacred Shield up and use Divine Plea in combat for the mana.