The Fatimids, who were Isma'ili, conquered Egypt and organized a caliphate which lasted for over two centuries (296/908-567/1171). Often disputation and fighting occurred in major cities like Baghdad, Cairo and Nayshapur between Shi'ites and Sunnis, in some of which the Shi'ites would gain the upper hand and come out victorious.
FATIMIDS
Meaning of FATIMIDS in English
Advanced Islamic English dictionary. Расширенный исламский словарь английского языка. 2012