Awakening Sun is a 13th level cleric Encounter power that was introduced for the Sun Domain in Heroes of the Fallen Lands.
Awakening Sun
Cleric Attack 13
As you swing your weapon, a shining beacon of radiant energy appears above you. Your allies draw strength from its light, while your enemy shrieks in pain.
Melee weapon
Target: One creature
Attack: Wisdom vs. AC
Hit: 2[W] + Wisdom modifier radiant damage.
Effect: You and each ally within 5 squares of you gain 10 temporary hit points and can make a saving throw.