Early Christians branded Arabia a breeding ground of Christological heresy before Islam existed

Evidence

Earlier writers associated Arabs with Christological heresies. Eusebius, in his Historia ecclesiastica, portrays Arabia as a hotbed of such heresies; see Shahîd, Rome and the Arabs, 107-8. — John V. Tolan, Saracens, 1414

Categorization

• XREF: Confirms the genealogy that heresy-labeled the region precedes and prefigures later anti-Islam polemic — supports existing vault claims that Islamophobia’s template outlives and predates its specific target.