Your opponent the Devil is prowling around like a roaring lion
looking for someone to devour.
Resist him, steadfast in faith,
knowing that your brothers and sisters throughout the world
undergo the same sufferings.
-- 1 Pt 5:5b-14
In this petition, evil is not an abstraction, but refers to a person, Satan, the Evil One, the angel who opposes God. The devil (dia-bolos) is the one who "throws himself across" God's plan and his work of salvation accomplished in Christ.
-- CCC 2851