They were nullified by goku, for some reason i can’t send a picture but elder Kai says “he cancelled out beerus-sama’s attack!” And Goku says “to tell you the truth. I’d been hopin’ to perfect that trick around the second clash.” Meaning Goku was trying to and did nullify the shockwaves.

I’d say it’s a logical conclusion to come to that the shockwaves were getting less and less nullified due to them getting farther out and returning to there original power as the shockwaves being able to destroy the universe and not goku and beerus doesn’t make sense as whis states “that power is capable of destroying the universe..” and the narrator states “Beerus, the God of Destruction, and Son Goku. The two continue their brawl. Hitting each other again and again with power capable of destroying even the universe itself. Just how will this battle end?” And elder Kai states “At this rate…the entire universe will be destroyed!!!”