In Batman Incorporated #8, Damian is killed by his clone, The Heretic, during a Leviathan invasion of Wayne Tower. Shortly before his death Damian has a heart to heart talk with Nightwing.

How Damian Wayne dies?

Damian is killed battling a brutal enemy, the Heretic (an adult Damian clone) in issue number 8 of the second volume of the Batman, Inc. comic book, which went on sale February 27, 2013. According to the story's writer, Grant Morrison: "He saves the world. He does his job as Robin. He dies an absolute hero".

How was Damian Wayne resurrected?

Damian Wayne

The fight ended with Batman's son being impaled on the sword of his evil clone, Heretic. His resurrection came about when his body was stolen by Darkseid. Upon retrieving his son's body, the technology of Apokolips gave Batman the power he needed to resurrect his child.