I appreciate your suggestions. Here are few pics. The plant is dark colored, and I think you're right about it getting heated in outdoors.
Although its strange, Ive taken this plant outside on few other occasions and never noticed something of this magnitude. Just took few hours of heat to cause this debacle.
So basically, I should keep it hydrated and wait for its recovery, without any fertilizers?
I'm afraid, Ive already sprayed some food to it, before reading your reply.