Jetpack Widget Top Post

You can use filter ‘jetpack_widget_get_top_posts’ to filter ‘title’ and ‘permalink’ of top posts.

> Did you mean use filter configure in function.php (theme)
in functions.php

add_filter('jetpack_widget_get_top_posts', 'filter__jetpack_widget_get_top_posts', 10, 3);
function filter__jetpack_widget_get_top_posts($posts, $post_ids, $count) {
	if ( class_exists('WPGlobus') ) {
		foreach( $posts as $_key=>$post ) {
			$posts[$_key] = WPGlobus_Core::text_filter($post['title'], WPGlobus::Config()->language);
		}
	}
	return $posts;
}