RewriteEngine on
RewriteCond %{HTTP_REFERER} ^http(s)?://(www\.)?cheater1.com.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http(s)?://(www\.)?cheater2.com.*$ [NC,OR]
RewriteCond %{HTTP_REFERER} ^http(s)?://(www\.)?cheater3.com.*$ [NC]
RewriteRule .* http://www.microsoft.com [R,L]