Looking on the internet deeply has found these results:

"will leave you speechless" is the most popular phrase on the web.

"will have you speechless" 138,600,000 results on the web	"will leave you speechless" 140,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
The only words I've ever heard render you speechless were, OR ARE YOU SPEECHLESS WITH HAPPINESS? This royal ensemble may leave you speechless, but it's sure to make little Sally say, Never thought I'd see you speechless. I mean "you" will. Are you speechless or just not paying attention? who dreamt and made Incarnate gaps in Time and Space through Images juxtaposed, and trapped the archangel of the soul between 2 visual Images to recreate the syntax and measure of poor human prose and stand before you speechless and intelligent The former can easily overpower the latter, giving scientific credence to the notion of being "rendered speechless."	I will leave you to get to know my brilliant daughter. Besides, Uncle Alfio will leave you Solfatara. I will leave you alone with him. I will leave you to your book. I will leave you now to pursue another excuse. And I will leave you to ponder that. Funding... A process that will leave you feeling like the Minotaur in the maze. This royal ensemble may leave you speechless, but it's sure to make little Sally say,

"will have you speechless"

138,600,000 results on the web

"will leave you speechless"

140,200,000 results on the web

More popular!

The only words I've ever heard render you speechless were,
OR ARE YOU SPEECHLESS WITH HAPPINESS?
This royal ensemble may leave you speechless, but it's sure to make little Sally say,
Never thought I'd see you speechless.
I mean "you" will.
Are you speechless or just not paying attention?
who dreamt and made Incarnate gaps in Time and Space through Images juxtaposed, and trapped the archangel of the soul between 2 visual Images to recreate the syntax and measure of poor human prose and stand before you speechless and intelligent
The former can easily overpower the latter, giving scientific credence to the notion of being "rendered speechless."

I will leave you to get to know my brilliant daughter.
Besides, Uncle Alfio will leave you Solfatara.
I will leave you alone with him.
I will leave you to your book.
I will leave you now to pursue another excuse.
And I will leave you to ponder that.
Funding... A process that will leave you feeling like the Minotaur in the maze.
This royal ensemble may leave you speechless, but it's sure to make little Sally say,