Правило .htaccess:

RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} (Amazonbot|Claudebot|SeopultContentAnalyzer|SeekportBot|DataForSeoBot|Barkrowler|BLEXBot|SemrushBot|MJ12bot|AhrefsBot|bingbot|DotBot|PetalBot|LinkpadBot|SputnikBot|statdom.ru|MegaIndex.ru|WebDataStats|Jooblebot|Baiduspider|BackupLand|NetcraftSurveyAgent|openstat.ru) [NC]
RewriteRule .* - [F,L]