Then I heard a loud voice in heaven say: “Now have come the salvation and the power and the kingdom of our God, and the authority of his Messiah. For the accuser of our brothers and sisters, who accuses them before our God day and night, has been hurled down. Revelation 12:10 NIV
At the cross, we have received salvation. Christ had the strength to withstand Satan’s attacks. He gives us the same power when we ask for it. Satan is not in control of this world. Christ is. Our accuser will meet his end soon.