The great dragon was thrown down — that ancient serpent, called the devil and Satan, who deceives the whole world. He was thrown down to the earth, and his angels were thrown down with him.
In context
7Then war broke out in heaven. Michael and his angels fought against the dragon, and the dragon and his angels fought back, 8but he was not strong enough, and there was no longer any place for them in heaven. 9The great dragon was thrown down — that ancient serpent, called the devil and Satan, who deceives the whole world. He was thrown down to the earth, and his angels were thrown down with him. 10Then I heard a loud voice in heaven, saying: “Now the salvation and the power and the kingdom of our God have come, and the authority of his Christ, for the accuser of our brothers and sisters has been thrown down, who accused them before our God day and night. 11They conquered him by the blood of the Lamb and by the word of their testimony; they did not love their lives so much as to shrink from death.