Nastaví (the third-person singular) translates to "will set" or "[it] configures."
The phrase appears to be a technical or software-related string in Czech, likely meaning "[FetiStyle] Settings" or "[FetiStyle] Configures." [FetiStyle] NastavГ
: It may be a tag used in Central European gaming forums to denote a user's specific configuration or setup. [FetiStyle] NastavГ