It starts off with Rudeus doing a No Cost Apartment like comedic scene with him sarcastically going over the chu-ni like names of the knights and the laughable inquisition they've started on him in the barrier.
The names are all like Coffin, Gravemaker, The Duster, etc... they do the inquisition and literally ask him like 2 questions in which they all scream out agreeing at the same time in uniform because he was already decided as guilty to them ahead of time.
After that whole comedic scene Rudeus is just like.... okay can I sum this up? and he asks them the facts, that they aren't going to bring out the Miko to check his memory, and what his punishment will be (having his arms cut off and his magic capability sealed with special magic bindings)
Rudeus basically gives up after summing things up to them and having them confirm it and goes into battle mode, the fight starts off with him using his gauntlet to break the anti-magic barrier right off, then just in wait-and-see mode, they surround him use various elements to attack quickly, three of them are using anti-magic shields and water god style ward off/negate his magic.
He tries out a variety of things like shooting magic at multiple of their side at once, though they have a good formation against his magic going in offense + defense at the same time so Rudeus actually has a bit of trouble just using basic rock cannon/fire ball.
After trying a few things he uses a slow moving fire ball then uses ranma to negate one of the anti-magic shields before the fire ball hits and surprises them, though it still gets warded off by Tereze.
It suddenly switches to Terezes PoV midway and shes like Rudeus we're all actually on your side, but we have no choice but other than to listen to the Cardinals orders, thats why weve decided not to use poison and are just going to remove your limbs and seal your magic. Her PoV sums up some really simple thoughts on that theyve made counters to his fighting style over 10 days or so and that she would take care of things with Zenith.
After they're about to go on the offensive for close range attacks which they think he's weak against, he uses Bog and then Heavy Fog to cut off their sight, while they're basically stuck he summons Mk. I, when the fog clears he's wearing it and then basically instantly owns them all in close range knocking out Tereze last.
The chapter ends with the Miko(99% assumed) appearing like... "Ah..." and then they meet eyes and she holds out her arms towards him with a smile on her face and he basically guesses what shes hinting at...