In Islam, the way to salvation (being saved from the Hellfire and admitted into Jannah (Paradise)) is believing with full conviction that there is NO GOD/DEITY worthy of (your) worship except Allah subhanahu wa ta`ala (exalted is He). It’s as simple as that. In Islam, Jannah is not something you attain based on your ethnicity, creed, or belief that someone died for your sins. Jannah is something that is earned first and foremost by recognizing the Oneness of your Lord and worshiping Him alone with no partners or intermediaries. Basically, the key to Paradise in Islam is the statement “La illaha illa Allah (There is no god but The God).” Allah (swt) tells us in the Quran:
“And whoever desires other than Islam as religion – never will it be accepted from him, and he, in the Hereafter, will be among the losers.” (Quran, 3:85)