Pray

Paul emphasizes that the battle is not a natural one and natural weapons are ineffective.
Spiritual battles must be fought with spiritual weapons

Therefore take up the whole armor of God, that you may be able to
withstand in the evil day, and having done all to stand,

Stand therefore, having girded your waist with truth, having put on the
breastplate of righteousness, and having shod your feet with the
preparation of the gospel of peace,

Above all, taking the shield of faith with which you will be able to quench all
the fiery darts of the wicked one
.
And take the helmet of salvation, and the sword of the Spirit, which is the
word of God.

Praying always with all prayer and supplication in the Spirit being watchful
to this end with all perseverance and supplication for all the
saints...(Ephesians 6:13-18)