Your question is Handle a Tough Deal Negotiation. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're in a sales role and a buyer pushes hard on terms, price, or scope during a live deal. The conversation has gotten tense, and you need to protect the relationship while still holding your line.
Describe a difficult negotiation and how you managed it.