P: 14 (reduced by 1 on AA, by 3 against champs or monsters)
Nocturne's Skill Max Order: Q → E → W
Level 1: Quinn Cheese level 1. Nocturne will retaliate with Q that is basically just poke for level 1. Keep autoing him and run him down until he runs to his tower. Zone him off the wave and try to juke his second Q that comes back up in 8 seconds.
Level 2: Nocturne has spellshield likely, but it doesn't do much for the lane. If you want to chase him down, try to use your Q to eat up his spell shield because if he spellshields your E, he doesn't get slowed from your E.
Level 3: Play super aggressive, and if nocturne tries to engage on you, Q-E then auto to proc phase rush. Q first is important so your Q eats his spellshield.
Level 6: When Nocturne engages on you with R, make sure to Q-E-AA in that order as fast as possible and then run away after that combo This combo procs phase rush, but more importantly, Q-ing first is essential because his spellshield will eat your Q. This is important because If his spellshield eats your E, your E wont slow him or push him back, which will make you dead. You need to Q first, always.
Pre 6 he can't do anything. The only thing you need to keep in mind is if Noc tries to engage on you, you MUST Q-E-AA instantly.
Q first becasue your Q will eat his spellshield.
If your E hits his spellshield, this is terrible becasue he wont be knocked back or slowed, which means you will get feared every time.
PR is op because if noc fears you, with PR MS, his fear makes you flee super fast (the interaction is the same as if you fear Master Yi in R if you ever saw Fiddlesticks Fear a Yi in his R) You actually live with PR even through fear becasue of that.
Save your combo to counter this engage and you are golden.
Noc has HARDCORE mana problems, so he cannot combo you much.
The matchup is free in lane, and if you Q-E-AA his R combo, you will live throug his only chance of ever killing you.