How should I respond when a hurtful person uses the excuse that emotions are just the mind?
First of all, there’s no such thing as a hurtful action, emotionally speaking. What seems hurtful to you might be just what another one needs, and he may be grateful for that one hour later. Or it might be friendly teasing to yet another person.
In viewing another’s actions as objectively hurtful, you are already judging them, already pretending that you are better, because you yourself would never do that, of course. In spirituality, the focus must always be on you. All you know is that their actions are hurting you, don’t put yourself above anyone else.
So having said that, an appropriate response could be:
“Yes, I know, it’s all in my mind, but I am feeling hurt/angry/sad and I don’t want to experience these emotions right now. I am asking you not to invoke them in me/speak to me that way, could you do that for me, please? Thank you.”
If you can be specific with regards to what words or actions are hurting you, and also be specific with how you would like to be treated instead (make it a positive request, i.e. “do that”, rather than “don’t do that”) - even better. I couldn’t do that in my example, because your question didn’t have any details.