AWS S3 has a requester pays model -> https://docs.aws.amazon.com/AmazonS3/latest/dev/RequesterPaysBuckets.html.
Is there an equivalent for AWS Lambda?
No. There is no requester-pays model for AWS Lambda. Nor am I aware of it being available for anything except Amazon S3.
Side-note: The Requester-Pays option in Amazon S3 still requires somebody with an AWS Account to authenticate the request. The Data Transfer cost will be charged to the requesting account.