Well, you can start off with doing everything in your power to not give in to the fear. They feed off of any negativity they can get.
Do you believe in the power of prayer? This is a prayer that quite a few members including myself have tried. The St. Michael prayer.
“St. Michael the Archangel,
defend us in battle.
Be our defense against the wickedness and snares of the Devil.
May God rebuke him, we humbly pray,
and do thou,
O Prince of the heavenly hosts,
by the power of God,
thrust into hell Satan,
and all the evil spirits,
who prowl about the world
seeking the ruin of souls. Amen..”
If you’re of the Christian faith, you can invoke the name of God or Jesus, to command it to leave. Or whichever deity you follow.
For some reason they don’t always respond or react to the name of God, or your faith. But it’s something that can protect you nonetheless.
In as much as I was at one point very religious, I’m quite firmly not now. That being said, I definitely won’t discount prayer as an option for protection, even if it’s just reciting traditional ones like you mentioned. Otherwise I’d imagine it being a bit like telling a vegetarian they had to eat a steak or they could die, and then refusing to on principle despite it being your best chance.