Oh, shut up and help me remodel the Null Physical page!
Null Physical (物理無効, Butsuri Mukou?), also known as Null-Physical and Ethereal Mantle, is a recurring positive status effect in the series. It is the opposite of Null Magic in that it completely negates all physical damage.
Yuna's special dressphere, Floral Fallal, can learn Shield which makes the user immune to physical damage. The Psychic dressphere has the ability Physics Guard which nullifies all physical damage done. It takes 80 AP to learn and Magic Guard must be mastered.
Magick Wall is an enemy Augment that makes the the user immune to all physical attacks for approx. two minutes. It can be used by Deathscythe, Deathgaze, Wild Malboro, Trickster, Behemoth King, Shadowseer, Exodus, Zodiark, Luxollid, Vagrant Soul, Avenger, Doctor Cid (1, 2).
Ethereal Mantle is a synthesis ability that negates all physical damage taken by the character, but makes them unable to be healed from damage or status with magic. It is obtained by equipping five items of the Ultimate Physic group. As only Hope and Fang have weapons in the Ultimate Physic synthesis group, they are the only characters that can obtain Ethereal Mantle.