That verse is not about Satan. That verse is about the King of Tyre as indicated by verse 12. Tyre was an ancient very famous and a very wealthy city in the ancient world. It would be in what is today presently Lebanon, so very close to Israel. The Bible and other historical records indicate the Tyrians were mostly merchants made very wealthy mostly for their product known as Tyrian Purple, a very very rare dye in the ancient world favored by the nobility of many different kingdoms. The Tyrians were racially Canaanites, specifically of the course of Sidon (son of Canaan, and also a city-state in its own right later on.) Sidon is also mentioned in this prophecy by Ezekiel in this chapter and the next few chapters.
The ultimate fate of Tyre was that the king of Babylon, Nebuchadnezzar, destroyed the land settlement of Tyre, but the Tyrians created a Tyre in the middle of the sea which escaped destruction (this is both in secular history as well as a prophecy the biblical book of Zechariah). In accordance to the prophecies, the Tyre in the sea would not escape destruction and the third beast king Alexander would eventually build a causeway to the Tyre in the sea and ultimately destroy it.
Satan the spirit of error has no form. When God saw pride in its heart (day 3) he no longer could be used to bring the gospel . Day four the Sun and the Moon the corruption time keeper began to unwind leading toward the last day under the the Sun .
The god of this world worked in the heart of the king of Tyre (man of sin). .Just as he the spirit of the antichrist'( singular) worked in the heart of Cain as antichrists' (plural) as legion many antichrists as men of sin .
Satan the unseen spirit of the antichrist is shown working in the heart of Peter (antichrists) who fell from false pride .
Thinking he was the key that the gates of hell could not prevail against .The law of Catholicism . ..making the flesh of Peter the key, .Just as he worked in the King of Tyre.
The Son of man, Jesus the apostle having no power to rebuke the father of lies as a prophet was given words of the lord that did rebuke the spirt of error . He said to Peter directed to the unseen father of lies; . . . Walk by faith get behind me not seen, not the Peter seen, or the King of Tyre, or the Pope .Anyone that says you need a mans seen to teach us .
Peter the serial denier was forgiven of his blasphemy against the Son of man Jesus over and over..
Blasphemy against the unseen Holy Spirit, the one with the power not seen. . is not forgivable,
From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day. Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee. But he turned, and said unto Peter, (the inspired words of the father..) Get thee behind me, Satan: thou art an offence unto me: (the father) for thou savourest not the things (unseen) that be of God, but those that be of men. (Peter or the king of Tyre). Mathew 16: 21-23