Phazite is a form of Phazon with a stronger composition. Phazite is used mainly by the Space Pirates for defensive measures. Berserker Knights also have Phazite armor plating on their heads. It is used for armor and shielding certain important doors. Phazite can only be penetrated by high frequency waves. Samus's Nova Beam provides these waves. Paired with Samus's X-Ray Visor, which can see through Phazite, the Nova Beam can shoot targets through Phazite.