！
Here's to our days of glory!
Literal
Our [attributive-の] glory [attributive-の] days [to-に] toast!
乾杯 ('toast, cheers,' literally 'dry cup' — one drinks the cup dry) is the standard Japanese toast cry. 栄光 ('glory, splendor'). 日々 ('days, daily') is a reduplicated form for iterative plurality. An exclamatory toast phrase; the に marks the target of the toast ('to X'). Copula omitted — this is a stock celebratory formula.