H1 cancelled by my employer (in India)

I am having my H1B, which later got cancelled by my employer after my resignation. Presently I don't have any plan to travel, but later may be possible.


Could you please let me know, if someone else files the petition again, then do I need to go for Visa stamping? 

My employer told me my Visa got cancelled what does that mean? (it's not reflecting anywhere in my passport)