Going to summit at university with Phillip, briefly (6)
I believe the answer is:
uphill
'phillip briefly' is the definition.
I can't judge whether this definition defines the answer.
'going to summit at university' is the wordplay.
'going to' says to put letters next to each other.
'summit' becomes 'hill' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'at university' becomes 'up' ('up' can mean studying at university).
'hill' after 'up' is 'UPHILL'.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for uphill that I've seen before include "Towards the summit" , "Difficult, like steep slope" , "Epithet for hard struggle" , "Towards a slope's top" , "like the road to the Galibier?" .)