Power of the Light is a skill located in the Dawn's Wrath (which can be found in the Templar skill tree). Power of the Light is a morph of Backlash.
Power of the Light deals the following types of damage: Physical Damage. Which means that it gets buffed by the following blue champion point trees: Master at Arms, Mighty, Piercing, Precise Strikes. Also the following red champion point trees protect against this skill: Hardy, Iron Clad.