أحسن الله اليكم Ustadh, in Lesson 13 of Al-Ḥāʾiyyah, it was mentioned that صيغة فعال can be either صيغة المبالغة or صيغة النسبة. For this ayah (وما ربك بظلام للعبيد), will it be appropriate to say that ظلام here is صيغة النسبة, which is like صيغة المبالغة in negation? (As it means not at all unjust)

Ustadh AbdulAziz al-Haqqan

We can't say that because if we do it means that Allah does little Injustice we seek refuge by Allah