Deflection bonus

A deflection bonus affects Armor Class and is granted by a spell or magic effect that makes attacks veer off harmlessly. Deflection bonuses stack with all other bonuses to AC except other deflection or protection bonuses.

Sources of Deflection bonuses:
 * Items:
 * Randomly generated cloaks/rings/necklaces of Protection and named protection items
 * Randomly generated armor/shields of Stability and named stability items (requires True Neutral alignment)
 * Randomly generated armor of Reinforcement
 * Items with a Sapphire of Protection in a (or Green/Purple)
 * Spells:
 * Shield of Faith +2-5 (exact formula: 2 + (caster level / 6), rounded down)
 * Protection from Evil +2 (from attacks from evil creatures)
 * Protection from Chaos +2 (from attacks from chaotic creatures; only on named items such as Chaosgarde bracers at this time)

Other common bonuses to your armor class are armor bonus, shield bonus, dexterity bonus, natural armor bonus, and miscellaneous bonus.