<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Models\AuthenticationCombinationConfiguration;
use Microsoft\Graph\Beta\Generated\Models\AuthenticationMethodModes;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new AuthenticationCombinationConfiguration();
$requestBody->setAppliesToCombinations([new AuthenticationMethodModes('fido2'), ]);
$result = $graphServiceClient->identity()->conditionalAccess()->authenticationStrength()->policies()->byAuthenticationStrengthPolicyId('authenticationStrengthPolicy-id')->combinationConfigurations()->byAuthenticationCombinationConfigurationId('authenticationCombinationConfiguration-id')->patch($requestBody)->wait();