ItemPropertyDamageImmunity

From NWN2Wiki

// Returns Item property damage immunity.  You must specify the damage type constant
// (IP_CONST_DAMAGETYPE_*) that you want to be immune to and the immune bonus percentage
// constant(IP_CONST_DAMAGEIMMUNITY_*).
// NOTE: not all the damage types will work, use only the following: Acid, Bludgeoning,
//       Cold, Electrical, Fire, Piercing, Slashing, Sonic.  
itemproperty ItemPropertyDamageImmunity(int nDamageType, int nImmuneBonus);