negative regulation of compound eye photoreceptor cell differentiation
Any process that stops, prevents, or reduces the frequency, rate or extent of compound eye photoreceptor cell differentiation.
GO:0046533
negative regulation of photoreceptor cell differentiation
is_a
GO:0110116
regulation of compound eye photoreceptor cell differentiation
is_a
GO:0001751
compound eye photoreceptor cell differentiation
negatively_regulates