or we could talk about Judeo-Cristian-Islamism, since the three are considered the Abrahamic Religions
or we could talk about Greco-Judean-Christian-Islamism, since some people find similarities between Jesus and Socrates, and wonder if the contact between Greek and Jewish cultures fused into early Christian mythology
http://rationallyspeaking.blogspot.com/2005/08/socrates-vs-jesus.html