Watchman Nee Resist the Devil (The Watchman Nee Writings Book 1)

The question, then, is not victory, for Satan is already defeated. The Lord has overcome! The church has overcome! The conflict between the church and Satan is to protect the Lord’s victory, not to win it. Our aim is not to wrestle victory from Satan but rather to keep victory from being robbed.
We should always triumph in the cross of our Lord. We should proclaim, "Satan, you are a defeated foe!" We must always remind him of this fact. When you resist Satan, believe this fact that he is a defeated foe. We do not withstand him because of his fierceness. Not at all. I must tell you that such an understanding is a complete distortion. It will only bring in confusion. No, we stand before Satan and declare to him: "You are already defeated! You are finished. I am now in the heavenly places. I defy you and I resist you."