You let Dol Arrah's light shine through.

Encounter ✦     Divine
Minor Action      Close burst 5

Channel Divinity: You can use only one channel divinity power per encounter

Target: You and each ally in the burst

Effect: Until the end of your next turn, each target can reroll any damage die roll of 1 or 2 when using a radiant attack power.
In addition, all squares within 5 squares of you are illuminated by bright light until the end of your next turn.

Published in Eberron Player's Guide, page(s) 89.