伤害减免（Damage Reduction，特异能力或超自然能力）：具有这种特殊性质的生物能够减免由大多数武器和天生武器造成的伤害。伤口立即愈合，或者武器未造成伤害便弹开（不管是哪一种，对手都会发现攻击无效）。该生物在被能量攻击（包括非魔法的）、法术、类法术能力、以及超自然能力攻击时仍受到正常伤害。某些特定的武器有时也可以造成正常伤害，见如下说明。
在怪物的说明中会给出减免伤害的数量（通常为5到15点）以及不被伤害减免影响的武器种类。
某些怪物的弱点是惧怕穿刺、钝击或挥砍伤害。
某些怪物的弱点是惧怕一些特殊材料，比如炼银（alchemical silver）、精金（adamantine）、或寒铁（cold-forged iron）。由不合适的材料制造的武器做出的攻击都会受到伤害减免，即便该武器有增强加值。
某些怪物的弱点是惧怕魔法武器。任何在攻击和伤害上具有+1以上魔法增强加值的武器都可以克服这些怪物的伤害减免。这些生物的天生武器（而不是他们持有的武器）在克服伤害减免时被视为魔法武器。
极少数非常强大的怪物仅仅惧怕传奇武器；即，增强加值在+6以上的魔法武器。这些生物的天生武器在克服伤害减免时也被视为是传奇武器。
某些怪物的弱点是惧怕混乱、邪恶、善良、或守序阵营的武器。牧师施展阵营武器法术（align weapon）时，被影响的武器会获得一个或更多这类属性，而某些魔法武器本身也具有这类属性。一个具有阵营亚种（混乱、邪恶、善良或守序亚种）的生物在克服伤害减免时，它的天生武器或持用武器视作具有和它阵营亚种相匹配的武器。
如果在伤害减免说明中的斜线之后是一短横（-），则没有武器可以克服此伤害减免。
一些生物会受到不止一种武器的伤害。其中任意一种武器都可以克服伤害减免。
一些生物需要两种不同攻击的组合来克服伤害减免。这时武器必须同时具有这两种属性来克服伤害减免。仅有其中一种属性的武器仍然会受到伤害减免。
Damage Reduction (Ex or Su): A creature with this special quality ignores damage from most weapons and natural attacks. Wounds heal immediately, or the weapon bounces off harmlessly (in either case, the opponent knows the attack was ineffective). The creature takes normal damage from energy attacks (even nonmagical ones), spells, spell-like abilities, and supernatural abilities. A certain kind of weapon can sometimes damage the creature normally, as noted below.
The entry indicates the amount of damage ignored (usually 5 to 15 points) and the type of weapon that negates the ability.
Some monsters are vulnerable to piercing, bludgeoning, or slashing damage. (normally Ex)
Some monsters are vulnerable to certain materials, such as alchemical silver, adamantine, or cold-forged iron. Attacks from weapons that are not made of the correct material have their damage reduced, even if the weapon has an enhancement bonus. (normally Ex (adamantine) or Su (silver or cold iron))
Some monsters are vulnerable to magic weapons. Any weapon with at least a +1 magical enhancement bonus on attack and damage rolls overcomes the damage reduction of these monsters. Such creatures’ natural weapons (but not their attacks with weapons) are treated as magic weapons for the purpose of overcoming damage reduction. (normally Su)
A few very powerful monsters are vulnerable only to epic weapons; that is, magic weapons with at least a +6 enhancement bonus. Such creatures’ natural weapons are also treated as epic weapons for the purpose of overcoming damage reduction. (normally Su)
Some monsters are vulnerable to chaotic-, evil-, good-, or lawful-aligned weapons. When a cleric casts align weapon, affected weapons might gain one or more of these properties, and certain magic weapons have these properties as well. A creature with an alignment subtype (chaotic, evil, good, or lawful) can overcome this type of damage reduction with its natural weapons and weapons it wields as if the weapons or natural weapons had an alignment (or alignments) that match the subtype(s) of the creature. (normally Su)
When a damage reduction entry has a dash (–) after the slash, no weapon negates the damage reduction. (normally Ex)
A few creatures are harmed by more than one kind of weapon. A weapon of either type overcomes this damage reduction.
A few other creatures require combinations of different types of attacks to overcome their damage reduction. A weapon must be both types to overcome this damage reduction. A weapon that is only one type is still subject to damage reduction.
