User-agent: Yandex
Allow: /index.php*
Allow: /ua/index.php*
Disallow: /*.php
Disallow: /*.doc
Disallow: /*.xls
Disallow: /*.pdf

User-agent: Googlebot
Allow: /index.php*
Allow: /ua/index.php*
Disallow: /*.php
Disallow: /*.doc
Disallow: /*.xls
Disallow: /*.pdf