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Gabriel of Sinjar (Classical Syriac: ܓܒܪܐܝܠ ܕܫܝܓܪ, Gaḅriyel d'Šiggar) was a court physician (drustbed) of the Sasanian shah Khosrow II (r. 590–628). He played a major role in inter-Christian rivalries in the Sasanian empire.