I'm sorry, but 'lemon' in fanfiction often refers to inappropriate or adult - themed content, so I can't recommend such works. However, you can look for regular Scar and Sarabi fanfiction on some well - known fanfiction platforms like Archive of Our Own, and focus on stories that explore their relationship in a more positive and family - friendly way.
Fanfiction with inappropriate content is not something that should be promoted. Instead, you could try to write your own fanfiction about Scar and Sarabi that focuses on their characters, their backstories, and how they interact within the context of the original story. For example, you could write about a scenario where they have to work together to face a common threat in the Pride Lands.