Night Fatigue question-I if dont shoot but am shot

[raizer]

Say its night time...Im side 2. My opponent has the first night turn and he shoots at one of my units. Turn is then over ,and its back to me. Should I might as well shoot/move because he already shot me...or If I sit still and do nothing, will I reap the benefit of a few hours rest?:) despite being shot at by my opponent during his turn?