Whats going on here is something that is majorly missing in most christian churches today, and that is thoughtful discussion about spiritual warfare. Basically whats happening is Ephesians 6:12. "For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places."

Now, when an actual event occurs, what you need to remember is that you, as a believer, have power and authority. If you are a born again christian, God views you as literally part of Jesus, an ingrafted branch, through the spirit. When something happens like this, say: "By the power and authority of Jesus, you have no right to be here. You must leave this instant." Don't use any "I" statements, and NEVER NEVER say "I command you to get out of the room." It's Jesus's authority and his infinite power that allows you to command these things out of your life. If you cant move or even talk, even just saying in your head "Jesus Help!" will make the
entities disappear.

Praying for protection before you go to sleep is always a good idea as well.

Here are two possible prayers:

Ask Jesus to stand in the gap so the enitities don't return after you've kicked them out

Pray:
"LORD JESUS STAND IN THE GAP FOR ME AND SHUT ANY OPEN DOORWAYS, ANY AREAS OF SIN IN MY LIFE THAT THE ENEMY MAY HAVE A FOOTHOLD IN, SO THEY CANT COME BACK."

Pray, in the name and authority of Jesus, to get the entities to leave:
pray this:
"BY THE POWER AND AUTHORITY OF JESUS CHRIST THE DEMONS AND SPIRITS WITHIN HAVE NO RIGHT TO BE THERE!! THEY MUST LEAVE THIS INSTANT AND NEVER RETURN! THE DEMONS CANNOT STAY!!!"

Think about it in terms of contract negotiations.

This doesnt close all the spiritual doorways that entities walk through, but its a pretty good start. Occasionally, other things are needed