More Info:
Ensure that a Microsoft Azure activity log alert is fired whenever a ‘Delete Virtual Machine’ event is triggered within your cloud account. An Azure activity log alert fires each time the action event that matches the condition specified in the alert configuration is triggered. The alert condition that this rule searches for isWhenever the Administrative Activity Log 'Delete Virtual Machine (Microsoft.Compute/virtualMachines)' has 'any' level, with 'any' status and event is initiated by 'any'