Luk 10:19 Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you. 

Lord God, You have given me all authority over the enemy. By the power of Your Holy Spirit I can successfully resist the devil and he must flee from me. Show me when I am not recognizing the encroachment of the enemy in my life. Teach me to use that authority You have given me to see him defeated in every area. I ask in the name of Lord Jesus 

Jas 4:7 Submit yourselves therefore to God. Resist the devil, and he will flee from you.