I have a 13th-level cleric and he's in the same boat (I think his Ref save is +9). I defended it with spells. Spells to consider:
- Resistance (Superior) - a 6th-level spell, but +6 to all saves is pretty nice for 24 hrs
- Energy immunity - pick an element and be immune to it (6th-level)
- mass energy resist - 3rd-level spell, this is a must have. Resistance 30 will keep you alive
- Energy Aegis - I forget the level, but as an immediate action it seems worth it.
- Divine Agility - (already mentioned)
No Reflex saves are save or die. They are save or take a whole lot of damage. So another way to get around a poor Reflex save is boosting your hit points.
Clerics are bad at Reflex saves, but good at protecting themselves. Stick with what you are good at. With a +34 to Will saves, I can only guess you have an amazing Wis score, so you should have spells to spare.