User-agent: Yandex
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /bitrix/
Disallow: /auth/
Disallow: /search/
Host: www.1c-bitrix.ru

User-agent: Googlebot
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /bitrix/
Disallow: /auth/
Disallow: /search/

User-agent: *
Disallow: /bitrix/
Disallow: /auth/
Disallow: /search/