abjuration light 

Traditions arcane, occult

Cast [>>] somatic, verbal

Range 10 feet

Duration 1 hour

You create a seven-layered sphere to protect an area. This multicolored sphere functions like a prismatic wall but is shaped in a 10-foot burst centered on a corner of your space. You must form the sphere in an unbroken open space so its edges don't pass through any creatures or objects, or the spell is lost.

Core Rulebook, page 359.