The ability of a device to withstand electromagnetic disturbances from another device is:

EMI describes the disturbance itself, not a device's capability to withstand or tolerate that disturbance.

RFI is a specific type of interference in the radio frequency spectrum and does not describe a device's immunity or tolerance capability.

EMC (Electromagnetic Compatibility) is formally defined by standards bodies such as IEC and CISPR as the ability of equipment to operate satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to other equipment. The immunity component - a device's ability to withstand disturbances from external sources - is one of the two core pillars of EMC, the other being emissions control. Devices must meet both immunity and emissions thresholds to be considered EMC-compliant.

Fast transients are specific high-speed voltage pulses or surges and do not describe any device capability related to electromagnetic tolerance.

ESD is a specific static electricity discharge event and is not a term for a device's general electromagnetic withstand capability.