Hi @Ivan Kirinčić, We are unable to get all files filtered by modified date from the whole site. But we could get files from list and filter by Modified. Please refer to following
https://graph.microsoft.com/v1.0/sites/example.sharepoint.com:/sites/development:/lists/<listid>/items?$filter=fields/Modified eq '2024-01-01T08:23:03Z'
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