Things in my bike saddle bags:

* compass
* folding knife
* flashlight (lights on front/back of bike as well)
* rain poncho
* biking gloves
* small FAK
* hand sanitizer
* 2 trash bags
* sunscreen
* spare inner tubes
* water bottle
* power bars
* multi tool for bikes
* sm pr of binocs
* sm towel
* usually a map of the area

I like to think I'd be OK in a situation like that.