Use XPath to scrape elements which do not contain a certain child element

For a scraper I am looking to get a list of all elements on a page, which do not contain a certain child element. The DOM looks something like this

<scrape>
      <div id='123'>
          <span>test</span>
      </div>
</scrape>
<scrape>
      <div id='1234'>
          <span>test</span>
      </div>
</scrape>
<scrape>
      <div id='12345'>
          <span>test</span>
          <span>don't include</span>
      </div>
</scrape>

What I need to do is, my list needs to contain all scrape elements which do not contain a span with text don't include.

Any ideas?

Thanks!