The Eastern Orthodox Church kept itself much purer than the gradual corruptions and decline of the Western Roman Church in the Middle Ages. From this source, then, the true Protestants were able to draw upon copies of Scripture in Greek which did not suffer from the corruptions that appeared in the Latin.
We may point to some great figures and missionaries in the Eastern Church, some of which are very famous, such as George who slew a dragon (a large reptile, a dinosaur).
One interesting concept in the Orthodox tradition is the role of the Emperor/Tsar, who is both a national and religious leader. This has also been understood by some English-speaking Protestants, though not all.
Now, the question must be raised about whether an antichristian spirit could arise from Eastern Orthodox quarters. After all, the Apostle John, living in the Greek part of the Roman Empire, did warn of the spirit of antichrist.
So then, while we are all acutely aware of Western Antichrists past, present and future, we should also see how it is possible that out of a claimed Byzantine tradition, an antichristian operation can arise.
We are told in the Book of Daniel that one day the Archangel Michael is going to stand up for the godly people. It says, at Daniel 12:1, that there will be a time of trouble.
There has been an attack on the Bible and its promises very much in the West, but should we also expect an attack from an Eastern figure on the promises and certainty of Protestant copies of Scripture that would attempt to contradict Ezekiel 39:8?
“Behold, it is come, and it is done, saith the Lord God; this is the day whereof I have spoken.”