http://www.testofbelievers.com/prayer-to-break-curses-cast-out-demons-and-protect-gods-people/  (edited) "SPEAK the following commands below. 
if they’re not starting to come out within 10 minutes, they probably have [legal right
FATHER, God, in the name of Jesus:
(Like Job) I remit the sins of this person  ____________.
I separate every foul spirit from _______’s soul in accordance with the word of God in Hebrews 4:12.
I cut every foul spirit from _______ with the sword of the spirit.
Unclean spirits, I command you (not) to manifest and (permanently) come out now.
Go to the pit.
I send Holy Spirit fire to burn you 1,000 times hotter than hell. Fire.
I send Holy Spirit fire all over your body. Fire.
I send Holy Spirit fire all over the room, floor and ceiling. Fire.
Every evil spirit that hears my voice, I command you to tell the truth in the name of Jesus. Tell us your name. How long have you been in there? What have you been doing inside? How many are inside, and what, if any, legal right you have to be there?
Every evil spirit that hears my voice, I command you to attack the strongman.
Do not stop in the name. I order civil war. Evil spirits attack each other in the name of Jesus. Destroy your own (2nd heaven) kingdom.
I loose burning judgment and destruction upon you.
I command you to look at Jesus and do what He tells you to do. Look at Jesus! (Repeat) Do what he tells you to do! (Repeat)
I cut all evil spiritual connections to this body and burn it away. Burn off now! (Repeat)
I command the holy host to torment you demons and give you no rest.
Father in heaven, send power from the 3rd heaven to destroy these demons.
Holy host trample on and shatter these demons.
I come against every unclean spirit by the blood of the lamb. This is a child of God.
Their (spirit, soul and) body has been sanctified by the blood of Jesus.
I rebuke and cast out every unclean spirit to the pit and command them never to return.
Holy warrior angels, hook into the demons and rip them apart. Send the demons to the pit.
Warrior angels, flog the demons and choke them out.
Repeat each command as directed by the Holy Spirit.
End the deliverance by giving thanks to God and praising him in the name of Jesus.