Divine Phalanx is a 17th level cleric Encounter prayer that was introduced in Divine Power.
Divine Phalanx
Cleric Attack 17
As you attack, divine trumpets sound, and your allies rally to your side. Together, you are all stronger.
Melee weapon
Target: One creature
Attack: Strength vs. AC
Hit: 2[W] + Strength modifier radiant damage.
Effect: You teleport each ally within 10 squares of you to a square adjacent to you. Each ally you teleport gains a +2 power bonus to AC and to attack rolls until the end of your next turn.