I don't think rage is quite the answer to it. Being angry may dissipate the fear (temporarily) but in it's place (in my experience) only leads to incoherent and irrational thinking. Fear comes from within. In the heat of the moment it's difficult to do such things, so (IMO) a martialist has to learn how to get ahold of the fear and either harness it or surpress it or... re-direct it.
This, I found for myself, can be done via "brain-training". But even then without even a base experience in (real-world) combat/fights one can mistakenly give themselves an overblown interpretation of realistic situations in which to (brain) train in. You have to be wholly realistic about the capablities of people and yourself. This means facing yourself honestly, not lying to yourself about what you can and cannot do.
I deal with people and their fears a lot. Claustrophobia, Acrophobia, Lygophobia. I help them understand and deal with it at the moment. The old adage applies in many of life's situations: "You kill what you fear and you fear what you don't understand." Understanding the fear is one step towards the re-direction of it.
Re-direction. Where is the fear going? What is it making you do? Go 180 degrees of that and be in control of yourself. You won't always be in control of what's happening around outside of you but you can
always control what's happening inside of you emotionally and mentally. When I was bitten by a rattlesnake my heart raced wildly out of control. I knew that I needed to get ahold of myself and get re-direct that fear that was pounding in my chest or else I'd be in serious trouble. I took deep breaths and focused on slowing my heart rate and ignored what was going on around me (my other friends shouting advice on what to do... the snake was now out of harms way and so was I so I was free to do this internal focusing. I counted my heart beats and focused on slowing it down to a normal rate (for me anyway). Within a few moments I was calm and able to deal with the situation at hand. Within an hour I arrived at a hospital calm and quiet and was able to focus on my next fearful moment... needles. YUCK!

Fear is always going to be there. You can minimize it, channel it do whatever but it's still there. Dealing with it, facing it and training your mind to focus beyond the fear will help in re-directing it.
Remember; the mind is the most powerful weapon anyone can possess.
Or you could try this little mantra from Frank Herbert's Dune:
I must not fear. Fear is the mind killer.
Fear is the little-death that brings total obliteration.
I will face my fear. I will permit it to pass over me and through me.
And when it has gone past, I will turn the inner-eye to see it's path.
Where the fear has gone there will be nothing. Only I remain.
:asian: