Do you need to banish an evil spirit?
If you are looking for a great spell the following spell is a general defense against demons and evil spirits. Not all demons will be beat with this, but even when the spell is not adequate enough to get rid of the spirit, it can still hurt them enough to keep them at bay. Use this to banish an evil spirit.
If spirits threaten me in this location,
Battle Water by Water and Fire by Fire,
Eradicate their souls into nothingness,
and eliminate their powers until the last trace.
Let these evil beings leave,
Through time and space.