"be requested to do" is correct and usable in written English.
You can use it when you are asking or telling someone to do something. Example: I was requested to do some extra duties.
"Mark Arbib did not do it when he was requested to do so by the environment references committee.
Universal Studios helped some cinema chains with the cost of extra security when it was requested to do so.
In a statement to the Observer, JBS said it had blocked sales from farms inside the park after being requested to do so by the prosecutors' office.
The failure of the applicant to provide such documents or statements within a reasonable time after being requested to do so shall be deemed to be a waiver by the applicant of an opportunity to present such documents or facts for consideration by the Administrator in granting or denying the application.
In group 3, they were requested to do the descriptive task under the online planning condition (OLP).
A judge in California dismissed the case on Wednesday after being requested to do so by lawyers from both sides.
"If your device doesn't power up when you are requested to do so, you will not be allowed to fly to the US on your original service.
"I'm not in Sierra Leone on vacation but to deliver what I'm requested to do and I'll try my best to deliver.
