In the midst of his trials under Diocletian, St. George feigned an intention to offer sacrifice in order to end his torment. Arriving at the Temple of Apollo in Nicomedia, the Great Martyr stood in front of the idol and made the sign of the cross. Unable to bear the power of the invincible weapon as wielded by the saint, multiple demons were immediately cast out of the idol and confessed Christ as true God. The lifeless statues then fell to the ground and shattered. While not explicitly spoken about in terms of the demonic, his defeat of the dragon which has become the central theme of his iconographic representation in the Church, also proclaims his victory over the enemy of mankind since the Devil is called the dragon in the Book of Revelation (Chapter 12).
Hymnography
With the breastplate of ardent faith, with the shield of resplendent grace, with the mighty spear of the Cross girt all about, thou didst prove unto thine enemies to be all-invincible; as a God-like prince in war, thou didst vanquish the demons’ troops, and dost dance for joy with the Angels; and caring for the faithful thou dost hallow and preserve them, when they invoke thee, O Martyr George.
(Fourth Troparion; Lord, I have cried; Great Vespers)
Thou hast lived worthily of thy name, O soldier George; for taking the Cross of Christ upon thy shoulders, thou hast cultivated the earth that had become barren because of diabolic deception; and uprooting the thorny religion of the idols, thou hast planted the vine of the Orthodox Faith. Wherefore thou gushes forth healings for the faithful throughout the world, and hast proved to be the Trinity’s righteous husbandman. Intercede, we pray, for the peace of the world and the salvation of our souls.
(Doxastikon of the Martyr; Lord, I have cried; Great Vespers)
Thou hast set a crown of glory on thy head, O crown-bearer George; for, as Paul crieth out, thou, seeing the invisible enemy, didst persevere, and becamest a victor over his deception. Alleluia, Alleluia, Alleluia, to Christ, Who is risen!
(Sixth Troparion of the Entreaty; Great Vespers)
Solomon said: Let the eyes of mortals gaze straight; for, he foretold, whoso locket straight shall find mercy from Christ God. Lending a ready ear unto this, O much-enduring George, thou didst follow the teachings of the Master; and when thou wast given up to the lawless, thou didst endure manfully, abhorring the rituals of delusion, because they are profane. For the love of Him that made thee, thy body was wholly severed limb by limb, and yet more was Belial wholly put to shame and wounded, when he saw thee wearing thy crown and flourishing again. Wherefore, as thou abides in the courts of thy Lord, O prizewinner, together with the powers on high, intercede with Christ that our souls be saved.
(Doxastikon of the Martyr for the Entreaty; Great Vespers)
We hymn thy contests, O all-blessed George, whereby thou hast overthrown the worship of the idols and hast destroyed all the deceit of the demons, O all-renowned Martyr.
(Ode Four, First Troparion; Second Orthros Canon)
Calm the tumult of temptations and dangers, O wonderworthy George, and as a soldier of Christ, drive every affront of the demons away from them that sing thy praises.
(Ode Four, Second Troparion; Second Orthros Canon)
As sweet-smelling flowers from another Paradise, let us gather hymns from the divinely-inspired Book of Psalms, and come, let us plait bright garland of songs woven for the Martyr; for he triumphed, and destroyed the power of Satan.
(Ode Eight, First Troparion, First Orthros Canon)
By thine intercessions, O crown-bearer George, check the flood of adversities, sufferings, and dangers, of tumultuous calamities, of maladies that befall us, for the devices of demons, and of the violence of adversaries.
(Ode Eight, First Troparion, Second Orthros Canon)
O Blessed George, unceasingly importune the Lord for us who praise thee as a Martyr of Christ, as a vanquisher of tyrants, as an exorcist of wicked spirits, as an unsleeping guardian, as a protector never put to shame.
(Ode Nine, First Troparion, Second Orthros Canon)