So I got a chance to read through what you have so far and took some notes. First, add a profile picture! It makes a world of difference.
I'll start by saying that I like the setting, it seems like you've put some focus into developing that setting. As far as the prologue characters, I would consider naming the other knights that are part of the conversation, even if they only exist in that brief moment. Unless you are intending for their names to be lost over the ages or otherwise unknown, the status that these knights hold suggests that they should be important enough to at least have names.
One thing that I am always critical of is the perspective. In the prologue, the tone of the narration is inconsistent. It is at times conversational, as if it is being narrated by some sort of entity, but it remains detached from any particular point-of-view. In other words, it seems like someone is retelling the story, but without actually having that 'someone'. I'd recommend cleaning it up or utilizing a narrator, such as it being told by the professor. When the reader assumes the role of the protagonist, this isn't an issue, as you are now perceiving the world through his/her eyes and thoughts.
Another thing to look at is your punctuation with quotes. Here is an example: "I am shouting!" he shouts. The first letter following the quote is not capitalized because they are part of the same sentence. "I declare." he declares. This is incorrect because the period should be replaced with a comma. Commas are missing throughout, so when you go back through it, be mindful of where you might be missing a pause. It can have a quantifiable effect on the flow of your prose. "I am trailing off..." he says, trailing off. This is also incorrect, because a quotation never begins or ends with an ellipsis, even if something is being omitted. Also, in literature, avoid double punctuation such as '!!' or '??'. Refrain from using numerals below 100. There is an instance of you including a list using '1.' and '2.' to describe something. This can completely break the immersion if you're not careful. This goes back to the perspective and tone.
"'Well... err... umm... we agreed[,]' you mumble unconfidently." This line is valid. You can leave it as is (with the grammatical correction) and be just fine. That being said, it's a terrible sentence. For only one reason. Unconfidently. It's really a word. It's a really ugly word. Say it aloud. If you don't vomit uncontrollably, then you are probably normal. Personally, I think it's one of the worst words in the English language, though. This is purely my opinion, I just think there are so many words, beautiful words, that are synonymous with unconfidently that could be used. Even spellchecker doesn't like the word. Every time I read it, it's like jabbing a pencil into my mind's 'ear'. As I said, you can leave it, I'm sure nearly everyone does not have a severe aversion to the word. I just find it to be clunky. When you read aloud, you can get a sense of the cadence of each line and decide the flow that you need to support the feeling that you are trying to invoke in the reader.
I like the premise of your story and I look forward to seeing more of it. I think you have a good start and if you stick with it, I could see it turning out well. This can be a lot to take in right now, but making corrections now and throughout will save a lot of effort and headaches when it comes to proofreading and editing.