Banish an evil presence

Draw a pentagram on a sheet of paper. Make sure it is large enough for  a candle can go on it.

Get some holy water. Spring water will work to

Light the candle and place it in the pentagram.

Say: "You are darkness, I am the light. You have no place here go back to where you came from. In the name of the gods. So mote it be."

Then take the holy water and put the candle out. That's it good luck!