Henry's Prayer

A work colleague left our office today and we all signed a leaving card for her. Later an evil spirit claimed that (unbeknown to me) some work colleagues had later written a demonic agreement of some kind on the card and that therefore I was somehow party to it. I know I'm not party to it from 1 Sam 16:7 and also Col 1:13 and I of course prayed to the Lord for protection, nonetheless please also pray for God to protect me and to cancel any possible demonic agreement for me.