Astolfo Resisting Command Spell

The Command Spell was a Master’s trump card, representing the right to exercise a command through any such mental chains as pride, duty and faith. No Servant could resist a Command Spell – unless they possessed extremely powerful anti-thaumaturgy.

“My… you are stubborn.”

“Master, please… cancel that order.”

“No! Never! This… yes, this is what I wanted! This is what I wanted to see! Do you feel it now, Rider? The utter loss of hope? You understand, don’t you? Your Noble Phantasm is just barely letting you hold on…”

- Vol 3 Chapter 1