Hide pages depending on role

To get the current role of the user

$current_user = wp_get_current_user();
if ( !($current_user instanceof WP_User) )
   return;
$roles = $current_user->roles;  //$roles is an array

After getting role set page ids which you want to show according to roles (for example)

    if($roles=='administrator'){
     $args=array('21','22','23');
    }

   or

   if($roles=='subscriber'){
     $args=array('24','25','26');
    }

you can use parse_query filter hook to exclude your pages using post__not_in attribute

add_filter( 'parse_query', 'exclude_pages_from_admin' );
function exclude_pages_from_admin($query) {
    global $pagenow,$post_type;
    if (is_admin() && $pagenow=='edit.php' && $post_type =='page') {
        $query->query_vars['post__not_in'] = $args
    }
}

Important Links:

• Hide a page in the admin end without a plugin?
• How to know the role of current user in WordPress?