Like Anu said, my heart literally stopped for a split second when I heard his voice. What a dhamakedaar comeback with such a beautiful dialogue, really it made the misery for the past 2 days almost worth it. I had to go back and watch that scene a couple times just to make sure it happened, and then a couple more because the line was just so wonderful and Phulwa's expression...priceless! She was literally terrified for his life at that time, and even in his state he came through just at the right time to ease her worry.
In fact the whole scene sequence after that was truly beautiful to watch, and like you guys said, JayGun chemistry was at its absolute best, so much so that you can feel all the emotions both of them were going through at that moment!
And I found this scene significant in a way because it really highlighted how much of the life and soul of the show Abhay is. I mean yeah the title character is Phulwa, but without him being there next to her the show doesn't have the same meaning or charm. The two days that we didn't get to hear a single line from here were absolutely horrible, and now with him regaining consciousness it feels like that despite what happens everything will end up being okay. His presence has become vital not only for Phulwa but also for the audience, because the more Abhay speaks and emotes the more enchanting the episode becomes!