As I stated in my profile, I'm a ceremonial magician. Some of my western type magic is based on rituals of the organization, "The Golden Dawn." This organization was founded in the latter part of the 19th Century and has been instrumental in influencing more occult magicans--past and present--than any other magical organization. I have placed together some of their most powerful rituals into quite an effective exorcism. I will now go into detail about it.
Equipment needed: Brown robe with hood, robe belt, large crucifix placed in robe belt, protective Circle of Art to stand in while exorcising each room or person, Triangle of Art to contain demons or demon, magical sword, air dagger, chalice to hold holy water, hand-held pentagram, hand-held metal bell, two white candles, incense.
a. With your robe on, go into the room that will be exorcised or situate yourself near the possessed person. Spread the Circle of Art on the floor, placing the magical sword, air dagger, chalice of holy water, metal bell, and pentagram inside it. Situate the Triangle of Art on the floor, on the East side of the Circle of...apex facing away from Circle of... Light the candles and place one on the left and right sides of the Triangle of...Light the incense and place it within the center of the Triangle of... Turn off all lights in the room, ensuring it's dark, except for candle light.
b. Stand within the center of the Circle of Art. Perform preliminary prayers, while ringing the bell. Lay the bell inside the Circle of...
c. Perform the Rite of Adoration of the Lord of the Universe.
d. Pick up the air dagger and perform the Qabbalistic Cross ritual. Lay it back down inside the Circle of...
e. Perform the Rite of Purification with water and Consecration with fire, using the chalice of holy water and another lighted incense. Lay them both inside the Circle of...
f. Pickup the air dagger, perform the Lesser Banishing Ritual of the Pentagram.
g. Perform the Lesser Banishing Ritual of the Hexagram.
h. Perform the Qabbalistic Cross Ritual again. Lay the air dagger back inside the Circle of...
i. Pick up the magical sword and point it at the Triangle of...Command the demons or demon to go onto the Triangle of Art, using a detailed conjuration.
j. Demand the demons or demon to tell you its names/name.
k. Using its names or name, demand the demon to depart from residence, business, or person/residence or you will--using God's and God Savior Jesus Christ's power --send it back to the dark Astral abodes.
l. After the demons or demon depart, perform prayers, thanking God and God Savior Jesus Christ for their love and power. Lay the magical sword back inside the circle.
m. repeat steps c through h again.
n. Close the ceremony.
o. Sprinkle holy water around the perimeters of each room in the house. If it is a possessed person, you will sprinkle the holy water on him or her, while saying the Lord's Prayer.
p. Perform the Lesser Banishing Rituals of the Pentagram and Hexagram in front of every door and window to ensure the demons or demon don't come back.
Now this is an outline of all the steps. I'm not saying that you will be successful in a short amount of time--no, because you must take your time and ensure you feel God's and God Savior Jesus Christ's love throughout the exorcism. The exorcist must feel divine love and not feel fear through each step, or he/she will probably not be successful.
NOTE: The crucifix and pentagram are used by exorcist if he/she should lose control of the situation. To regain control the exorcist would show demons or demon the crucifix and pentagram.