Now clerics have the main role of... you guessed it... healing but that doesn't mean you can't protect yourself.
Heal and Run!
Area Heal - Greater Healing - Cure - Recover
Info: Heal and swap out ASAP or... Heal, heal, heal, oh shit I'm out of cost!
The Annoying Healer [works better with Paladin]
Mirror Guard - Barrier - Area Heal - Cure
Info: This one needs a lot of planning and strategic work. Casting mirror guard at the start of battle will result in not being able to heal in emergency situations from the start. But a good player knows... sometimes sacrificing others to keep your stronger combatants alive is a smarter choice.
That Darn...
Judgment - Area Heal - Greater Healing - Heaven's Breath
Info: Judgment is pretty straightfoward but I'll explain why: you would use this for...
1) Killing off weak enemies
2) At the start of second round
This skill-set is better for second round matchups since
1. you can cast Heaven's breath before crystal phase ends.
2. you have MORE cost base to heal everybody.
If you feel like this is possibly something you like - switching the AOE heals for single heals is viable.