by Niccodaemus » Fri Dec 02, 2011 2:44 pm
Turning undead in Shatterworld by default is the domain of Phanes, god of all life (fauna). He does not concern himself with things that are not of his creation. So, a spirit inhabiting a corpse (zombie, skeleton, etc...) can be turned, but disembodied spirits, other than of those who were once among the living (ghosts, wraiths) are not his concern.
A circle of protection of the appropriate type however, is likely to keep spirits at bay. Protections are attuned to the domains of the spirits themselves. A circle of protection from the fire would create a shield against summoned fire. Each type of spell would have its own protection spell. Knowing a spell does not mean you know the protection spell against it.