Which means "That at last I may give you this final gift in death" I belive? It's from the poem carmen 101.
Multas per gentes et multa per aequora uectus
aduenio has miseras, frater, ad inferias,
ut te postremo donare in munere mortis... <--Angina part
it can be also translate like:
1.
Wandering through many countries and over many seas
I come, my brother, to these sorrowful obsequies,
to present you with the last guerdon of death...
2.
Through many lands and sailing over waves
I come to last at this unhappy place
to put the gifts of death upon your grave...
