Protego Fier

The Shield Charm is a term applied to several varieties of charms that create a magical barrier to deflect physical entities and spells. The latter may sometimes rebound directly off it back towards the caster and at others may ricochet off in other directions or dissipate as soon as they hit the shield.

The Shield Charm is a moderately difficult spell.

Etymology
Latin protego, "I cover" or "I protect".