Nihil

Nihil (見切り Mikiri, lit. Awareness) is a recurring skill in the Fire Emblem series.

Fire Emblem: Genealogy of the Holy War
In Fire Emblem: Genealogy of the Holy War, the skill negates critical attacks, sword skills and effective bonuses against the user, it has a 100% activation rate and is the base skill of Alec, Ayra, Deirdre, Julia, Larcei, Ulster and Seliph.

Fire Emblem: Thracia 776
In Fire Emblem: Thracia 776, the skill negates enemy's battle skills, it has a 100% activation rate, it is the base skill of Troude and Saias. It can be assigned with the Awareness Manual.

Fire Emblem: Path of Radiance
In Fire Emblem: Path of Radiance, the skill negates enemy's battle skills, it has a 100% activation rate, it is the base skill of Calill and Nasir. It can be assigned with the Nihil Scroll.

Fire Emblem: Radiant Dawn
In Fire Emblem: Radiant Dawn, the skill negates enemy's combat-related skills, it has a 100% activation rate, it is the base skill of Nolan, the Black Knight, Calill and Nasir. It can be assigned with the Nihil Scroll.

Trivia

 * In Latin, Nihil means "nothing", which fits the skill, because skill wise, the enemy can do nothing.