Deflect Missiles

Deflect Missiles, one of the Ancient Curses, protects against damage from Ranged attacks and can deflect some of the damage back onto the attacker.

The deflection curses are a primary reason for players to switch from the normal prayer set to the curses, as they have the same drain rate as the protection prayers from the regular book and can deal additional damage back.

Note that as with all Deflect prayers, the Ferocious Ring does not add damage you reflect back onto the enemy.

Deflect prayers will grant you 50% protection against most attacks.

The damage reflected is dependent on how much the attack would have done prior to be being blocked by the prayer: about 10% of the damage that would have been taken.

Trivia

 * Deflect Missiles used the Fletching icon rather than the Ranged icon before the Evolution of Combat update.
 * According to the ancient hymnal, Deflect Missiles's verbal incantation is "Arceto impetum telorum." (I deflect attacks of missiles).