Here are some scriptures to take into consideration:
1 Peter 5:8 Keep your senses, be watchful! Your adversary, the Devil, walks about like a roaring lion, seeking to devour someone.
John 17:11 I am no longer in the world, but they are in the world, and I am coming to you. Holy Father, watch over them on account of your own name, which you have given me, so that they may be one just as we are one. 12 When I was with them, I used to watch over them on account of your own name, which you have given me; and I have protected them, and not one of them is destroyed except the son of destruction, so that the scripture might be fulfilled.
Matthew 6:9 You must pray, then, this way:....13….deliver us from the wicked one.’