Well uhh.. that was long winded >.>
Really dodging GR is simple unless you get backed into a corner.. assuming you didn't get caught in the initial rock fall slightly (you may wish to dodge to the right or left to maintain altitude) and right before it explodes just dodge towards Golbez. Seriously, I am telling you all you need to do to dodge Golbez's attacks (as annoying as this is) is to dodge forward >.> GR hardly has any hitbox above it, and if you stay below you'll probably get hit.
I don't get what is so hard to understand here, Forward dodging > Golbez's attacks (you won't often punish his brave attacks with a Forward Dodge, but you seriously won't get hit >.>)
Your question confuses me because literally all his attacks can link into Cosmic Ray >.>Say an opponent, a Golbez player, is planning to use an attack that he can link to Cosmic Ray.
I would dodge forward seriously >.>... or I would block. Revolutionary concepts, I know.Giving examples beside, tell us all of the different methods you would take to avoid being hit.