User-agent: Yandex 
Disallow: /bitrix/
Disallow: /admin/
Disallow: /upload/
Disallow: /img/
Disallow: /images/
Host: cas.ru

User-agent: *
Disallow: /bitrix/
Disallow: /admin/
Disallow: /upload/
Disallow: /img/
Disallow: /images/
 
User-agent: Googlebot
Disallow: /bitrix/
Disallow: /admin/
Disallow: /upload/
Disallow: /img/
Disallow: /images/
Host: cas.ru