You can remove your pages from your sitemap to stop well-behaved bots
To stop people from scraping your content, making your website dynamically load content will help stop people from fetching your website through static webpage requests, bloating your blog with distracting ghost div/span tags might help stop novices from scraping through just HTML parsing, and using API’s which turn your text content into images make the information unharvestable.
If you know who is copying it, you could submit DMCA or copyright requests against their domain provider.