Trick here is to parry their projectiles close to them, but that can be difficult. Jump over their shadows when you're at full-screen range.Noob spammers.
If you're around jump-range and you parry a shadow, if they jump over your Golden Ball, you can Zeus' Rage them on their way down. If they jump forward, you can anti-air them with 1xxHelios, or B+1xxHelios. If they Teleport from that range, you will recover in time to block it.
Try to get close to the Noob Saibot scrub, but don't jump into his Shadow Upknee: stay closer than full-screen and a bit farther than jump-distance. Jump over the shadows at the right moment, Noob has horrible recovery on his Shadow Tackle/Slide. You can try parrying shadows from there instead of jumping as well.
If he does a Shadow Upknee but at a range where you know it won't hit you, you might be able to get a Zeus' Rage on him.