I haven't personally read a 'Ron protects Hermione from Cormac' fanfiction, but I can tell you what might be in such a story. Given Ron's feelings for Hermione throughout the books, he would be very likely to jump to her defense. Maybe Cormac is being overly pushy in asking Hermione to go to the Yule Ball with him, and Ron, seeing Hermione's discomfort, intervenes. To look for these fanfictions, make sure to use different search terms related to the situation, like 'Ron defends Hermione from Cormac's advances' as well when you search on fanfiction platforms.
There are many fanfictions out there with this theme, but it's a bit difficult to point out just one. However, often these kinds of fanfictions play on Ron's jealousy and protective nature. In the 'Harry Potter' series, Ron has shown his care for Hermione in many situations. So, in these fanfictions, it might be something like Cormac making Hermione uncomfortable at a party or during a Quidditch match, and Ron steps in to protect her. To find them, you can also join some 'Harry Potter' fanfiction groups on social media and ask for recommendations.
One common plot element is Cormac being a bit of a jerk towards Hermione. For example, he might make inappropriate comments or try to show off in a way that makes Hermione feel harassed. Ron then steps in, either with a sharp retort or by physically getting between them. Another element could be a situation where Cormac tries to undermine Hermione's intelligence or achievements, and Ron stands up for her, emphasizing how brilliant she is.
There's also 'Harry's Intervention' which delves deep into the friendship dynamics. In this fanfic, Ron's actions start to border on the unacceptable, and Harry has to be the hero to save Hermione from a rather difficult situation with Ron. It's really interesting how the author builds up the tension and then resolves it through Harry's actions.
One possible reason Severus might protect Hermione from Ron in fanfiction could be that Severus sees Hermione's potential and intelligence, which he respects. He may not want Ron's sometimes hot - headed or jealous nature to harm Hermione. In many fanfictions, Severus is often portrayed as a complex character who might step in to safeguard Hermione, perhaps out of his own sense of justice or an unspoken admiration for her.
One possible reason could be that Draco has had a change of heart. Maybe he realizes that Hermione is a person worthy of protection regardless of her House or her friendship with Ron. He might have seen some injustice about to befall her from Ron and his Gryffindor bravado getting out of hand.
There are quite a few on Archive of Our Own (AO3) as well. Some might be part of a larger series where this scenario is just one of the many interactions between Percy and Annabeth. You can use the tags on AO3 to narrow down your search specifically for the 'Percy protects Annabeth from bullies' theme.
One key moment could be when Ron says something really hurtful in a fit of jealousy. Harry might step in immediately, telling Ron to stop and defending Hermione's honor. For example, if Ron makes a snide comment about Hermione's intelligence being overrated, Harry would firmly say that Hermione's intelligence is one of the things that has saved them all many times.
Well, it definitely makes things more complicated. Ron would probably be very confused and angry at first. He might see Draco's actions as a form of interference or even an insult. He may think Draco has some ulterior motives towards Hermione.
It's also possible that the situation would escalate. Other characters might get involved, either supporting Severus' actions or opposing them. For example, Harry could be caught in the middle, not sure whether to side with his best friend Ron or with Severus, who has a history of being an antagonist. This could create a lot of drama and new plotlines in the fanfiction.
In this fanfiction scenario, Ron could draw on his knowledge of the wizarding world. He might remember some ancient spells or potions that could safeguard Hermione. He'd be really determined to protect her. He could also call on his friends like Harry for help if the situation got really tough.
One popular 'fred protects hermione fanfic' could be 'Fred's Guardian Instinct'. In this fic, Fred often steps in to protect Hermione from various threats in Hogwarts, like when she's targeted by some dark magic - using students. He uses his quick wit and his knowledge of the castle's secrets to keep her safe.