<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Security\AttackSimulation\EndUserNotifications\EndUserNotificationsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new EndUserNotificationsRequestBuilderGetRequestConfiguration();
$queryParameters = EndUserNotificationsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->filter = "source eq 'global'";
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->security()->attackSimulation()->endUserNotifications()->get($requestConfiguration)->wait();