Complex sentence: By contrast, devotees to the cause of Fatima, especially Traditionalist Catholics, dispute and allege that a verbatim consecration of Russia fulfilling the requirements of Fatima has not been performed.
Split into simpler sentences: By contrast, devotees to the cause of Fatima, especially Traditionalist Catholics, take issue with a verbatim wording of Fatima consecration ceremonies. They specifically dispute and allege that a verbatim consecration of Russia fulfilling the requirements of Fatima has not been performed.