try this site The Ulster / Orange/ Unionist / Loyalist songbook

couldn't find one called "No surrender"... could the one you're looking for be "Derry's walls"??? with the chorus

Then work and don't surrender
but come when duty calls,
With heart and hand, and sword and shield
- we'll guard old Derry's Walls.

however I do remember the chorus being sung as

"we'll fight but not surrender"........

slainte

alison