The Domitianic Persecution of Christians, Religious Events
Standing
Concerns Defining Moment
Currently States The execution of Titus Flavius Clemens, a former consul and Domitian's own cousin, and the banishment of his wife Flavia Domitilla to the island of Pandateria, both in 95 CE, are the tradition's central evidence. Later Christian writers read both as martyrdoms for the faith. Cassius Dio, writing within living memory of the events, gives the charge as "atheism and drifting into Jewish ways", a phrasing most modern historians read as pointing to conversion to Judaism, or possibly tax evasion under the fiscus Judaicus, the tax the Roman state levied on professing Jews, rather than to Christianity, which Roman writers of the period did not yet reliably distinguish from Judaism as a separate object of legal concern.
The ancient evidentiary basis for the whole tradition; the contemporary source gives a different, non-Christian-specific charge than the later Christian reading of the same incident asserts.
Source Persecution of Christians in the Roman Empire (Wikipedia)