Resistors too hot (tri-cree stunt): nearly 200°F

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Note: this is not the final wiring, this is just a test to check long-term performance, I'll be adding a switch later (the first one I used literally fried). Also yes, I know the battery is huge, I built a custom hilt myself to fit it.
I have 3 photo/deep red crees wired in parallel with a 1.2ohm 3w resistor each (from tcss: https://www.thecustomsabershop.com/1...istor-P22.aspx).

The problem: after only 10 minutes of operation, when I tested the temperature of the resistors with a thermal probe, they were over 90°C (193°F) and rising!

Not so great for either the safety of the internals or my hand, not to mention the not-so-insignificant loss of battery life being converted to useless heat energy.
Does anyone have any ideas how to make the wiring more efficient and/or less dangerous using the existing power source?