Do you want to exclude the content as well or only list and library names with icons/links to lists or libraries?
If you want to exclude a list from search results, you can configure the list not to include in search results.
To exclude all the items in the document library or list from appearing in to search results:
1. Navigate to the List
2. Go to list Settings
3. Then go to advanced settings of the list and check the option to remove from search results at the bottom. i.e. Allow items from this list to appear in search results? to
NO.
This will stop the search from hitting that specific list or document library.
Thanks,
Veera Reddy Kolan
SharePoint Consultant
Blog:
http://veerareddykolan.blogspot.com/