Where is the emergency fuel cut-off switch for a 2000 dti ford focus?

There isn't a readily accessible, easily-located "emergency fuel cut-off switch" like you might find on some older vehicles or race cars on a 2000 Ford Focus. Fuel delivery is controlled electronically, and disabling it requires professional-level intervention. In the event of a fire or fuel leak, your priority should be to evacuate the vehicle and call emergency services.