Pretty sure I know the answer, but wanted to check in case I was missing out...
Certain domain powers, such as Storm Burst or Rebuke Death read as "for 1d4 points of damage plus 1 for every two cleric levels you possess."
This is different from the wording in spells, such as Lightning Bolt that say "deals 1d6 points of electricity damage per caster level".
Just to clarify, at 10th level, my rebuke is healing 1D4+5 damage, not 5D4+5?
correct
1,000 and 1 thank-yous. May your lands be green and your goats fertile.