Formal/Literal:
* M'enlever le souffle (literally "take away my breath") - This is the most direct translation and is suitable for a formal setting.
Poetic/Figurative:
* Me couper le souffle (literally "cut my breath") - This is a more poetic way of saying it and emphasizes the feeling of being stunned or amazed.
* Me laisser sans voix (literally "leave me speechless") - This is a common idiom that conveys the feeling of being so impressed that you can't speak.
More informal/colloquial:
* Me faire perdre mes mots (literally "make me lose my words") - This is a less formal way of saying "leave me speechless."
* Me laisser bouche bée (literally "leave me with my mouth open") - This is a very informal and playful way of saying it, and it emphasizes the feeling of being surprised or amazed.
The best choice will depend on the context and the tone you want to convey.