Filter to hide protected pages in the admin list table from users who aren't qualified to edit them.

functions.php

/*
List some protected pages and then prevent unqualified
users from seeing them.
*/
function admin_hide_protect_pages( $q ) {
  global $pagenow, $wpdb;
	
	// Bail out if we have the proper permissions or we aren't on the right page
	if ( !is_admin()
		|| 'edit.php' != $pagenow
		|| 'page' != get_query_var( 'post_type' )
		|| current_user_can( 'manage_options' ) ) return $q;
	
	// List of reserved page
	$hidden_pages = array(
		'cart',
		'checkout',
		'pay',
		'order-received',
		'my-account',
		'change-password',
		'edit-address',
		'view-order',
		'order-tracking'
	);
	
	// Get the IDs of all the reserved pages
	$hidden_page_ids = $wpdb->get_col(
		"
		SELECT ID
		FROM {$wpdb->posts}
		WHERE post_name IN( '" . implode( "','", $hidden_pages ) . "' );
		"
	);

	if ( !$hidden_page_ids ) return $q;
	
	$q->set( 'post__not_in', $hidden_page_ids );
}
add_filter( 'pre_get_posts', 'admin_hide_protect_pages' );