Easiest way to scrape a site behind cloudflare?

Go slow 😛

Or scrape from several proxies, but still slow. More proxies you can use, more fast you can go.

Yeah, proxy servers helped me a lot in the past.
There are back connect proxy services out there that autorotate proxy server for every request/session.

Depends on what you are scraping, make sure you have some sort of a queue system, that will retry when scraping failed.