Agile Project Management - How to Find Common Ground on Requirements

In a Scrum Master-led stakeholder meeting, the Scrum Master must manage time and facilitate discussions to ensure all voices are heard and the meeting remains focused. Stakeholders may have differing views on product design, and it's the product owner's responsibility to consider these perspectives and make decisions. Meetings can become heated, but the Scrum Master acts as an impartial mediator. Ultimately, the product owner decides on features for the product backlog.

How can a Scrum Master act as a voice of reason during heated debates?

What should be the outcome of a stakeholder meeting regarding product features?