The Page Authority Addon for Scrapebox is a free addon for anyone who owns scrapebox.
This addon allows you to utilize the SEO MOZ API and get Page Authority and Domain Authority, as well as Moz Rank and an external link count. You can use this with both the free and paid API from Moz.
So you can effectively scrape a large list of urls for DA or domain authority as well as their Page authority of each individual url. Once done you can of course export the list to Excel via CSV.
Video shows how to setup the addon as well as register the API on the moz site.