If one attains his daily protein requirements throughout the day than muscle breakdown during a temporary fasted state when avoiding food intake or sleeping should be insignificant in ones overall results. Whole eggs, chicken, beef, fish, whey protein, EAAs, or micellar casein ( cottage cheese ) and adding some healthy fats would be an option before bed but only if one feels the need to do so as it is not going to be the determining factor in preserving muscle tissue.