htaccess Elite

I have a problem and don’t find solve for my issue. Please can somebody help me out with this?
I wish to all pages in all my directoryes and subdirectoryes can be viewed and indexed by Google
http://domain.com/directory1/pages.html
http://domain.com/directory2/_articles/145/pages.html etc.
but I don't wish that pages in root directory be available and I don't wish that Google can index them
http://domain.com/pages.html
except two pages
http://domain.com/index.html
and
http://domain.com/about-us.html
Can it be done with .htaccess?
Thank you very much