No great questions!
So we're not in Structured Play (no initiative), so we're not really subject to the rules of the games Structured Play action economy.
And even in Structured Play, with this system one roll does not just equate to one thing that you do. One roll encompasses up to a minute of back and forths, with both sides doing many things. This is where/how we have the narrative "space" in this system for additional "Truths" to emerge from the narrative symbols on the dice.
You can just use the Move Power, make a Move Power check, Force Dice+Discipline Difficulty 0 (for Silhouette 0). And it's done. The only risk really is you may only get dark pips and so have to take some Conflict to do it - BUT you can't fail (if you're willing to take some Conflict+Strain) and IT WILL LOOK BADASS. Right?
RE: deflecting it with Lightsaber. You can handle it 2 ways (since you have the Reflect Talent):
1. You use the Reflect Talent. All you have to do is state that you use that Talent to do it, take the Strain the Talent causes, and it's done. No check. And it will look badass. It's probably what the Master did. Yes you may take more Strain doing that, then using a Skill or just taking the hit, but you can't fail (the Strain here is coming from your concentration and effort), and it will definitely project the most strength to the Gamorreans.
2. You can make a Lightsaber check at the described Difficulty. You might fail (which means you get hit, and don't look so strong). But you might avoid talking any Strain at all.
So in this narrative scene, it's about cost/benefit choices and the image you want to project and what you're willing to risk or "pay" for it.