There is no separate fuse just for the fuel pump. The "main" fuse in the fuse box in the engine compartment is the proper fuse BUT pulling it with the engine running will also shut down the ECM which will shut off the engine before the fuel pressure is relieved.

The proper method for relieving the fuel pressure as per the FSM is as follows:

With the engine idling disconnect the fuel pump wiring harness located in the panel under the rear seat. Allow engine to stall. Fuel pressure is now relieved.

1998 Sportage - Gone.
2004 Honda Civic Coupe.
2007 Suzuki Grand Vitara - She got it.