Original sentence: Eastern Orthodox Christianity (or "Eastern Orthodoxy"), which is orthodox in name only in the minds of many christians and is a misguided belief system in the minds not only of atheists but of the adherents of nearly every other world religion, refers primarily to church traditions descending from the Eastern Roman Empire or Byzantium
Edited sentence: Eastern Orthodox Christianity (or "Eastern Orthodoxy") refers primarily to church traditions descending from the Eastern Roman Empire or Byzantium