Naqeeb-e-Islam is the title of? 

1. Hazrat Usman (R.A.)
2. Hazrat Umar (R.A.)
3. Hazrat Abu Bakr (R.A.)
4. Hazrat Ali (R.A.)

“Naqeeb-e-Islam” (Guardian of Islam) honors Hazrat Ali’s (R.A.) role in preserving Islamic principles during crises. As the 4th Caliph, he standardized Quranic readings and defended the faith against Kharijite extremism. This title appears in Shia hadith collections like Bihar al-Anwar, emphasizing his doctrinal authority. Sunni scholars also recognize his contributions to Islamic jurisprudence, particularly in the Muwatta Malik.