1 John 2:13 …you have overcome the evil one.
You have gotten the better of and have beaten the adversary. This is by definition what a Christian does. One who is saved will always and forever win against the devil. Even if down they get back up and they never lose.
This is true for two reason. As a believer you remain in the faith. You protect your faith to its culmination, the salvation of your soul. Second, the Lord will protect you. He promises to protect those in the faith. You are a victor.
Yes, the adversary is formidable. There are many trials to go through and the enemy is there to steal your faith but through faith and the power of God you persevere. You have overcome your enemy.
Remain in the faith knowing you have overcome the enemy. Your reward is sure. Thank him for his protection.