You invoke the rune of warding light, which produces a fortified area that your enemies have little chance of breaching.

Daily   ✦     Divine, Radiant, Weapon, Zone
Standard Action      Close burst 2

Effect: The burst creates a zone that lasts until the end of your next turn. You and your allies have cover while within the zone. While the zone persists, you can use the Warding Light Attack power, using the burst's origin square as the attack's origin square.

Sustain Minor: The zone persists.

Daily ✦     Divine, Radiant, Weapon
Opportunity Action      Close burst 2

Requirement: The power Rune of Warding Light must be active in order to use this power.

Trigger: An enemy enters the zone or starts its turn there

Target: The triggering enemy in the burst

Attack: Strength vs. Will

Hit: 1[W] + Strength modifier radiant damage, and you slide the target 3 squares.

Published in Player's Handbook 3, page(s) 109.