。
The priest gave me his blessing.
Literal
Priest [topic-は] me [to-に] his [possessive-の] blessing [object-を] gave.
司祭 ('priest,' specifically Catholic or Orthodox) is distinct from 牧師 (Protestant pastor). 祝福 ('blessing') is a Sino-Japanese noun. 与える ('give, grant') is formal. Standard ditransitive structure with に marking the recipient of the giving.