post__not_in

function extendd_exclude_extendd_settings_plugin( $query ) {
  
	if ( 'plugin' == $query->query['post_type'] ) {
		
		$current_user = wp_get_current_user();
		
    		// Not logged in = $current_user->ID == 0
		if ( 0 == $current_user->ID ) /* && ( false === $query->query_vars['suppress_filters'] ) */ ) {
			$protected_posts = get_extendd_settings_plugin(); //returns integer
			
			if ( !empty( $protected_posts ) ) {
				$query->query_vars['post__not_in'] = array( $protected_posts );
			}
		}
	
	}
	
	return $query;	
}
add_action( 'pre_get_posts', 'extendd_exclude_extendd_settings_plugin' );