Redirect user to login if not logged in, on specific pages

You can do it like this in admin section-

add_action( 'admin_init', 'redirect_non_logged_users_to_specific_page' );

function redirect_non_logged_users_to_specific_page() {

    if ( !is_user_logged_in() && is_page('add page slug or i.d here') &&       
    $_SERVER['PHP_SELF'] != '/wp-admin/admin-ajax.php' ) {

    wp_redirect( 'http://www.example.dev/page/' ); 
    exit;
}

And for frontend-

add_action( 'template_redirect', 'redirect_to_specific_page' );

function redirect_to_specific_page() {

    if ( is_page('slug') && ! is_user_logged_in() ) {

        wp_redirect( 'http://www.example.dev/your-page/', 301 );
        exit;
    }
}

And this auth_redirect function is for backend. If you want to use it on front end then add the below filter-

add_filter( 'auth_redirect_scheme', 'the_dramatistcheck_loggedin' );
function the_dramatist_check_loggedin(){
    return 'logged_in';
}

Then auth_redirect() will work as expected : redirect users to the login form if they are not logged in.