Help! (Please?)

Hello all you home chefs!

I need some help, please. I have a 1.5kg beef roast thawing out in the fridge that I have no idea what to do with. I only have a small selection of herbs and spices at home, namely garlic, rosemary, thyme, sage and a couple others. I also have some lemon juice and some sauces lying around in the fridge like oyster sauce, bbq sauce and stuff.

Question is, with my limited pantry and fridge flavourings, what can I do with my beef? I want to cook a special meal for my husband :)

Help! :)