Dromite Barrier( Complete Psionic, p. 49)
You can convert uses of your energy ray psi-like ability into walls of energy.
3 HD, Dromite, Dromite Ray*,
You can use one (or more) of your energy ray uses for the day to create a wall of energy of your chosen energy type. When you use this ability in conjunction with triggering energy ray as a psi-like ability, you create a 10-foot-by-10-foot vertical plane of energy. The opaque wall's near endpoint begins at any corner of your space and extends in a straight line 10 feet long (or as long as space permits, if the area is smaller). The wall lasts for 1d4 rounds. Any creature passing through the wall takes damage equal to the damage your energy ray psi-like ability would normally deal. If you create a wall so that it appears where creatures are, each creature takes damage as if passing through the wall. Either way, a successful Reflex save halves this damage (DC 10 + 1/2 your HD + your Con modifier).