League-of-legends – Does Twisted Fate’s Ult grant vision during Nocturne’s Ult

Nocturne to me is an "anti-carry". Make sure to play him in a team that can handle you not being around them in a teamfight. After you dispatch their squishy carry, fear the most disruptive member of their team to minimize their impact and then focus on the next highest priority target.

Short answer: NO.

Long answer: The mechanic of Ace in the hole is: If you have vision of the opponent you can use the skill, when the skill is used you WILL fire the shoot.

The only way is to some ally enter in front of the shoot and take the damage. OR you kill Caty BEFORE she fires at you.

Ace in the Hole (Active): Caitlyn marks an enemy champion at a huge range and channels for 2 seconds to line up the perfect shot, providing vision of the target for the duration. She then fires the projectile to deal massive physical damage. Enemy champions can intercept the bullet for their ally.