They are against it more than we are. ISIS is basically the same thing as the Muslim Brotherhood, which they overthrew in the biggest mass protests of any country anywhere. Egypt is most concerned right now about its western border and Libya, where ISIS like groups are taking over the failed state of Libya. They will invade if that happens.
Funny how we and Egypt are on parallel paths.... they elect the MB, we elect the MB. They overthrow the MB... they are a bit ahead of us.