One great 'Sasuke takes Sakura' fanfiction is 'A New Beginning'. It shows Sasuke finally realizing Sakura's true worth and they embark on a journey together to rebuild their village. It has a lot of emotional moments between them.
You can try Archive of Our Own (AO3). It has a large collection of Naruto fanfictions, including many with the 'Sasuke takes Sakura' theme. Just use the search bar and type in the relevant keywords.
One possible plotline could be that Naruto gets seriously injured during a mission. Sasuke and Sakura, with their combined skills, take him in and nurse him back to health. They might have to deal with Naruto's stubbornness when it comes to resting and following medical advice. Sakura could use her medical knowledge, while Sasuke could provide protection and also train Naruto in new techniques once he's recovered a bit, strengthening their bond as friends.
You can try websites like FanFiction.net. There are tons of Naruto - related fanfictions there, and you're likely to find many stories where Sasuke takes care of Sakura. Just use the search function on the site.
One great story could be 'Sasuke's Gentle Protection'. In this fic, Sasuke is always there to shield Sakura from danger, whether it's during a mission or in the village. He shows his care in small ways, like making sure she has her medical supplies when they're out.
Sasuke becomes more gentle. Usually he is cold and aloof, but with baby Sakura, he has to be soft. He shows more patience as he takes care of her needs, like when she cries and he tries to figure out what's wrong.
Taking care of Naruto might make Sakura more empathetic. She has to understand Naruto's pain and needs, which could make her a better ninja overall. As for Sasuke, it could break down some of his walls. He has to be vulnerable in front of Naruto and Sakura, showing that he's not just the aloof and brooding ninja. This experience might also make him more open to the idea of relying on others and being part of a team again.
Well, perhaps when Sasuke protects baby Sakura from a small danger, like a wild animal approaching. He stands in front of her, kunai in hand, his eyes full of a fierce protectiveness. And also when he tucks her in at night, making sure she's warm and comfortable, it's really sweet.
One common scenario is when Naruto gets injured during a mission. Sasuke, being the one to take care of him, uses his skills to heal Naruto or at least keep him stable until proper medical help arrives. Another scenario could be Sasuke protecting Sakura from an enemy's attack, perhaps even sacrificing himself a bit in the process. And sometimes, Sasuke might help Sakura in her medical research, providing her with rare herbs or knowledge he's acquired during his travels.
Love and protection are very common themes. Sasuke's role in taking care of Sakura often shows his deep love for her. It can be in the form of protecting her from enemies or just being there when she's sad.