So there's a video by Zyph and according to him it is possible but it is 1.8 and you have to have resistance level 5 to survive /kill but can you survive this op command in 1.16?
02 Answers
No, it is impossible to survive this command as /kill originally dealt 1,000 damage, which used to allow it to be possible to survive with Resistance V, but as Penguin said, it just instant kills now.
No, /kill literally just kills the player. There are no effects, armor, etc. that can allow you tp pass this.