1999 Honda Civic will not start

While driving, the car stopped and all electrical went off. When re-started, all electrical was on including the radio which was not on before. 10 minutes later, car stopped at traffic light and died. Has not re-started since.

Battery has been charged and tested; starter has been tested and is working; fuel is being pumped through the filter and spark plugs are getting wet; spark plugs are firing when held against metal; pistons are pumping as felt through the plug openings.

Engine will turn over but no combustion. Tested injectors with multimeter and all test at over 10v, but cranking shows very little pulse on the multimeter and barely flashes a test light.

So, I've got fuel, spark and compression. What else can I test? I don't just want to buy a ECU or oxygen sensor, or PCM or ICM or Main Relay, or whatever without knowing it is the most likely cause