Even if you suppress the display of a link from your navigation, or make it password-protected, the page can still be crawled by the site search, and any search engine. Here is how to keep it from being crawled:
On your editor screen, scroll down until you see the “Genesis SEO Settings” box.
At the bottom of that box are three radio buttons. Click the first two for “noindex” and “nofollow.”
Publish as usual. Your page is now invisible to search engines.