It is Boruto 54.
And I don't see how could Naruto die. It is kind of the most daring scenaristic choice.
He will probably lose most of his power and fall to Kakashi power level using Strategy, Kage Bushing and Rasengan. + Technology, lot of technology
Boruto is about Technology so Naruto could very well keep his replacement arm which is able to absorb Jutsu.😆