to start with. Stone Skin only increases by 12, while Reduce reduces it to zero. There's no way to dispel Reduce. Only with antimagic. As for fire resistance, it only removes the effect of reducing defense. Otherwise, the Nazir will have a strong spell, and it will be weakened by half with those perks, but that's not a big deal. It's not a given that Dodge will appear. 1 in 3 chance. Knight is a versatile race, but everyone has weaknesses. In general, on a map with a mentor, take Winraehl, and with luck, the Knights will be good.

Added 2 hours 2 minutes ago
Well, here's a clear example: I played against Axel with Nazir. I didn't win, but I gave him a hard time. Hero builds: Axel: .
Nazir: