Harrison Ford is not one to let a double take his place when conditions get uncomfortable and there was no complaining when he had to get out of a car surrounded by burning hot fires. I did not even like it from where I was standing to get the shot!
It sometimes takes a bit of guess work to pick the right exposure of an artificially made fire. On a film set they may not let a fire burn until the cameras are rolling and the actor is in place so you hope you guessed properly. I this case, the fire was lit at dusk which makes it considerably easier to guess. Most often, the light of a fire will not overwhelm the light from daylight so you can choose an exposure based on the ambient light. I shot this at 200th of a second to freeze the flames, F5 so I had some depth of field and ISO of 200 to preserve picture quality. It is also good to remove any filters you may have in front of your lens if a light source (like a fire) is IN your frame to avoid a ghost refection in your image.