Abdullah Ibn E Umar رضي الله ﺗﻌﺎﻟﯽٰعنه narrates that Rasool Allah صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ said,

“The person that performs his five daily prayers punctually and with complete purity will be surrounded by light on the day of judgment. The person that abandons and does not pray, his accounting will be with Fir’aun and Haamaan.”
[Ahmed]

This Hadith tells us that we will be surrounded with light, from the grave to the bridge (Pul Siraat). This bridge is thinner than a hair and sharper than a sword and we all have to cross over it. At that point our prayers will act like light showing us the way.

The prayers will testify in ALLAH (سبحانه وتعالى)'s court about the sincerity, truthfulness and faith of one that prays punctually. And ALLAH (سبحانه وتعالى) forbid, if a Muslim does not pray, his accounting will be with those that are trapped in the punishment of ALLAH (سبحانه وتعالى). Their crime was that they did not bow down before ALLAH (سبحانه وتعالى) because of pride and arrogance and claimed to be God themselves. (Ma’azAllah).