Well, it could strengthen their bond. Naruto being hurt might make Hinata more protective and caring towards him. This could lead to Naruto realizing Hinata's true feelings for him more deeply, and in turn, he might start to see her in a new light, growing closer to her.
In such a fanfiction, Naruto's injury could be a turning point. Hinata, seeing Naruto hurt, might become more assertive in expressing her feelings. This could make Naruto, who is in a vulnerable state, more receptive to her. Their relationship could then develop faster as he leans on her for support during his recovery.
At first, it could create a rift. Naruto might be confused and hurt not just physically but also emotionally. He may question Sakura's true feelings towards him. Sakura, on the other hand, would probably feel guilty, which could lead to her avoiding Naruto, further straining their relationship.
It can strengthen the NaruHina relationship. Since Naruto hates Sakura and Sasuke, he might turn more towards Hinata for emotional support. Hinata's presence becomes even more important to him. He realizes that Hinata is the one who truly cares about him, not like Sakura who is preoccupied with Sasuke.
It could be due to Sakura's feelings for Sasuke. If she's overly focused on Sasuke and Naruto gets in the way of her plans regarding Sasuke in some way, she might lash out and hurt Naruto without really meaning to cause serious harm.
If Naruto gets hurt by Sakura, their relationship could become strained. Naruto might be confused and hurt, both physically and emotionally. He might start to avoid Sakura at first.
It might create a rift between them. If Naruto feels that Sakura is always nagging and yelling, he could start to avoid her. In some fanfictions, this could lead to a period of estrangement where they don't work well together as a team. For example, Naruto might choose to go on solo missions instead.
It might also create a rift within their group. If their friends witness Naruto yelling at Sakura, it could cause tension among the whole group. Some might side with Naruto, thinking Sakura deserved it, while others might defend Sakura, leading to a divided group dynamic in the fanfiction.
It could strain their friendship. Naruto might start avoiding Sakura, which would make her realize she's done something wrong and try to fix it.
It might strengthen their relationship. Hinata could be more worried about Naruto and be more open about her feelings. She might take care of him during his recovery, which would bring them closer.
It can create a rift. Sakura might be hurt by Naruto's outburst and start to distance herself from him. This could lead to a period of coldness between them where they don't communicate as much.
It can strain their relationship. Naruto's jealousy might make Sakura feel suffocated. For example, if he's constantly interrupting her time with others. But it could also make Sakura realize Naruto's deep feelings for her. If she understands his jealousy is coming from a place of love, it could bring them closer.