Novice Technician Timing

[Darrell]

Novice Technician :
At the end of the round, you may roll 1 attack die to repair 1 faceup damage card. Then on a hit result, expose 1 damage card.

So when does this trigger?

After the End Phase?

or during the end phase? if so which of the 4 steps?

[Kris M]

The end of the round occurs during the End Phase, after Step 4, but before the criteria for winning the game are checked.