I'm sorry, I'm not very familiar with the specific 'khuda mera bhi hai' story. You may try to search for it on some literature platforms or ask someone who has more knowledge about this work.
Character development is also a big theme. A character who acquires the Mera Mera no Mi might go through a significant transformation. They could struggle with controlling the new power at first, which would lead to personal growth and new relationships within the Naruto story's framework.
Another way is to check out Naruto - related forums. Sometimes fans share their own 'mera mera no mi naruto' fanfictions or recommend ones they've read. These can often be a bit more niche and tailored to specific tastes within the Naruto fan community.
There could be a fanfiction where the Mera Mera Fruit is a key element in a crossover between the Naruto and One Piece worlds. Naruto travels to the One Piece world and obtains the fruit there. As he tries to master it, he meets various One Piece characters who help him understand the true potential of the fruit. This leads to a series of adventures where Naruto uses his ninja skills along with the fruit's powers to overcome challenges and make new friends in this strange new world.
It could be a rogue ninja who also has a devil fruit power and wants to steal Naruto's Mera Mera no Mi ability. Maybe he has a water - based devil fruit power and sees Naruto's fire - based power as a threat to his own plans for domination.
The Mera Mera Fruit can enhance Naruto's offensive capabilities. Its fire - based powers give him a new range of attacks, like shooting out intense fireballs or creating walls of fire.
One possible theme could be redemption. The title contains words like'maseeha' which can be associated with a savior figure, so perhaps the story is about a character seeking redemption through the actions or influence of this figure.
I'm not sure where you can specifically read the 'Mera Dil Mera Dushman' full story. You could try searching for it in local libraries, especially those with a collection of regional or cultural literature.
To tell the full story of 'Mera Dil Mera Dushman', more context is needed. It might be a story about a complex relationship between a person and their inner feelings or an external enemy, but without more details, it's hard to say.