I was thinking of water contamination at positive temperatures.
Are there any incidents in the past to support such a scenario, or is it purely hypothetical?
Modern engines have auto-relight functions. E.g. The CFM56 EEC will switch on both igniters if there is an uncommanded rapid drop in N2. Hence, should the burners be "supplied with water" instead of fuel for a short while (if even possible, but hypothetically speaking), the igniters will be turned on and as soon as the water has passed the fuel should re-ignite, preventing an engine failure. My guess is, that there should be a helluva lot of water in the fuel for the engine to fail outright.