Trying to find an exorcism movie

Hi,

It goes something like this:

-An exorcism (I think) is taking place on a girl. They promise to help her, but when they realise she's or the demon in her is too powerful, they turn on her and try to kill her. The devil reaches out to her to grab his hand and she does. Everyone is killed instantly.

Do you know which, film this is?

It sounds vaguely like the shrine (2010). At the ending, almost everybody in the house dies, and the demon is far too powerful to try and exorcise.