[Lee is definitely not fast enough to even begin to anticipate or guard against it. So perhaps there's the sound of some ribs cracking how do injuries even work and he's knocked to his side, proceeding to roll and bounce along the ground. Lee starts to climb to his feet... with a smirk of anticipation.]

Well done, Vegeta-sama! You are indeed the type of powerful opponent I would like to overcome. Normally, I would ask for Gai-Sensei's approval for this... but considering his absence as well as your clear power... [And he drops some weights kept under his clothing.] This can be an exception!

[And he dashes forward with a higher speed, now much closer to the effect of disappearing and reappearing, as he tries to get behind Vegeta to try setting off a fresh series of kicks.]