Aldori Style Conquest
Defense is now second nature to you, and your blade punishes those who try to attack and fail.
Prerequisite: Aldori Style†, Aldori Style Aegis†, Alertness, Combat Reflexes, Exotic Weapon Proficiency (Aldori dueling sword†), Weapon Finesse, Weapon Focus (Aldori dueling sword†).
Benefit: When you attempt to parry an attack using Aldori Style Aegis, you do not take any penalties on the attack roll incurred from using Combat Expertise or fighting defensively.
Source: Adventurer's Guide, p. 25