It became virulent in 1629 , when Cyril Lucaris denied the doctrine of transubstantiation , using the Greek translation metousiosis for the concept .
Eastern Orthodoxy did not become involved in the dispute prior to the 17th century .
Eastern Orthodoxy became virulent in 1629 , when Cyril Lucaris denied the doctrine of transubstantiation , using the Greek translation metousiosis for the concept .
Eastern Orthodoxy did not become involved in the dispute prior to the 17th century .