There are many instances. For instance, in a fanfiction where the trio goes on an uncharted adventure outside of Hogwarts. They encounter a series of traps. Harry is constantly checking on Hermione, making sure she doesn't step into any of them first. He offers to go first instead. Also, when Hermione is being bullied by some Slytherin students in a fanfiction, Harry immediately steps in. He warns the bullies and stays by Hermione's side, escorting her away from the situation. These are just a few of the many examples of Harry's protectiveness in fanfiction.
One example could be in a fanfiction where there is a new dark wizard threat at Hogwarts. Harry always makes sure Hermione is with him or in a safe place when they suspect danger. He might stand in front of her when the dark wizard's minions approach. Another example is when Hermione is researching a dangerous spell. Harry tries to limit her exposure to it, worried that it could backfire on her.
One example could be when someone tries to bully Harry, and Edward steps in immediately to stop it.
In certain fanfictions, Harry is shown as being protective of Teddy during magical training. He would be extra careful and supervise Teddy closely to prevent any accidental magic from going wrong and harming Teddy. Also, when it comes to Teddy's emotional well - being, Harry might be the first one to notice if Teddy is sad or troubled. For instance, if Teddy is bullied at school, Harry would take immediate action to stop it and comfort Teddy.
In some fanfictions, during a dangerous adventure outside of Hogwarts, Fred and George are constantly by Hermione's side. For instance, if they are exploring an old wizarding ruin and there are traps and dark creatures. They would use their combined knowledge of magic and their quick thinking skills to keep Hermione safe. They might even sacrifice their own safety to ensure she gets out unharmed. This shows their protective nature towards her.
A possible example is when a magical animal dies. Let's say a hippogriff that was friendly to Harry is killed. Its death could release a magic that alerts other magical creatures to protect Harry. Or perhaps the death of an old, powerful witch who had a soft spot for Harry. She could have set up a post - death spell that would protect Harry whenever he was in great danger.
One great example is 'The Protector's Pledge'. In this fanfiction, Draco finds himself drawn to protect Hermione from the dark forces at Hogwarts. It shows how their relationship evolves from animosity to a deep bond. Another is 'Shielding Hermione' where Draco defies his family's expectations to keep Hermione safe during a dangerous time in the wizarding world.
One example could be a fanfiction where Draco stands up for Hermione when other Slytherins are taunting her about her Muggle - born status. He might use his influence as a pure - blood Slytherin to make them stop. Another instance could be in a dangerous situation, like when there's a dark wizard threat in Hogwarts. Draco secretly helps Hermione by warning her or providing her with information to keep her safe.
One great fanfiction with this theme is 'The Protector's Promise'. In it, Harry is constantly on guard to keep Hermione safe during their adventures beyond Hogwarts. It beautifully shows his protective nature through various dangerous situations they encounter.
In some fanfics, Harry might protect his younger sibling from bullies at Hogwarts. He could use his magic skills or his status as 'The Boy Who Lived' to intimidate those who try to harm his brother or sister.
One example could be a story where Harry is verbally abused by some of his classmates in Hogwarts. Hermione steps in, using her quick wit and magic skills to defend him. She might cast a spell that makes the abusers' voices disappear when they try to say mean things. In this fanfiction, Hermione becomes Harry's protector, not just from the bullies but also from his own self - doubt that the abuse has caused.
In fanfiction, Harry might be protective of Hermione because of their deep friendship. They've been through so many dangerous adventures together in the original series. Harry values Hermione's intelligence and loyalty, and he doesn't want to see her get hurt. It could also be that in some fanfiction, there are new threats or situations that make him feel the need to be extra protective.