You can use your shield to protect your most vulnerable parts from area effects.

Prerequisites: Dex 13, Armour Training class feature or Shield Arm combat art; Shield Focus, Shield Proficiency.

Benefit: While using a shield of the type to which your Shield Focus feat applies, you gain a bonus on Reflex saves against area of effect attacks equal to your shield’s base bonus to armor class plus any bonuses granted by feats or class abilities. This does not transfer any enhancement bonuses on a shield to Reflex saves.

Special: If you have the Shield Arm combat art (Or another ability that functions similarly to Shield Arm), and the Reflex save would've failed if not for the bonus to Reflex saves this feat provides, both you and your blocking arm take the now halved damage (In effect, the damage is split between your full hit point total and your arm's hit point total). If you also have evasion, you don't take damage, but your blocking arm still takes half the damage as if you didn't have evasion.

Special: If you have the Armour training ability and are currently making use of it, the armour bonus that ability provides as well as the armour focus and improved armor focus feats (if you have them) also applies to the bonus on Reflex saves this feat provides.