uncommon abjuration 

Traditions arcane, divine, occult

Cast [>>] somatic, verbal

Range 120 feet; Area 60-foot burst

Duration until the next time you make your daily preparations

You create a shimmering barrier that attempts to counteract teleportation effects and planar travel into or out of the area, including items that allow access to extradimensional spaces (such as a bag of holding). Dimensional lock tries to counteract any attempt to summon a creature into the area but doesn't stop the creature from departing when the summoning ends.

Core Rulebook, page 329.