I sometimes have demonic dreams and the worship leader at church gave me this tip.

First rebuke them out loud.. and when you go to bed, place a copy of the bible or the New Testament under your pillow.. place you hand on it and pray. Ask God to wrap you in His arms and keep you safe and free from the demons that stalk you in your dreams.

It works for me every time.
I find that whenever I take on another project or ministry for the Lord, that I get attacked from every angle.. from people on boards even, and certainly in my dreams, but then I put that Bible under the pillow and ask for His intervention, and it works every time..

Blessings to you,
LL